Wireless charging standards. How wireless chargers work

Hello, dear readers. I'm sure you've heard, at least remotely, that you can charge your phone without using wires. Surely many dismissed it, thinking that such modern technology is only available in very expensive devices. But no.

Almost any phone supports wireless charging, although with some caveats. Branded smartphones can receive energy through the air right out of the box, but for others you will have to purchase special accessories. Today you will not only find out whether your mobile phone supports wireless charging, but also how to ditch the wires if your device is outdated.

Wireless charging – what is it?

Before considering smartphone models that are equipped with wireless charging, you need to understand its essence. In fact, wireless energy transfer is not such a complex technology as it seems at first glance. In technical terms, wireless charging is represented by two copper coils.

One plays the role of a transmitter of energy that it receives from electrical network. The coil is installed in the docking station (the platform on which the smartphone is subsequently placed). The second coil is the receiver. It is equipped with devices that require energy, for example mobile phones. As a rule, the receiver is hidden from view inside the case, unless it is external.

The device's battery receives energy thanks to the magnetic field that occurs when the receiver is in the field of action of the transmitter (usually about 4 centimeters). This principle is true for the Qi standard, which is most actively used in wireless charging of wearable devices.

Smartphone with Qi icon supports wireless charging

The Qi standard was developed by the Wireless Electromagnetic Energy Consortium to transmit energy over a distance of up to 4 centimeters. Scientists, when creating the standard, used developments that had already been made by many other specialists.

In general, the idea of ​​transmitting energy over a distance appeared two centuries ago, when Marie Ampere discovered a law proving that electric current produces a magnetic field. A significant contribution was made by Nikola Tesla, who built a tower to demonstrate wireless energy transfer. Subsequently, many organizations and scientists studied technologies, but a large percentage of experiments ended in the early stages.

Until this century, wireless energy transmission remained at the testing level. So far, the technology has not become interesting to large manufacturers of portable electronics. In 2009, after the creation of the Qi standard, which became the most suitable for use in wearable technology, a number of companies began to develop concepts that support wireless charging.

The impetus for companies was the fact that the standard was free and accessible. Today almost everyone flagship smartphone boasts the presence of technology, and the budget one boasts accessories that make the function work for them.

Not a dozen companies are working on energy transmission technologies other than electromagnetic induction. For example, students at the University of Pennsylvania conducted an experiment in 2011 in which they proved that energy can be transmitted through ultrasound. And in 1945, Soviet scientist Semyon Tetelbaum described in an article the possibility of transmitting energy using microwave radiation. Subsequently, this technology was actively developed. Energy can be transmitted with a laser beam, which NASA has proven in experiments. Nikola Tesla, known for his experiments with electricity, even believed that it was possible to create a worldwide wireless system that would save people from power lines.

List of smartphones with built-in support for wireless charging (2019)

Well, you are now familiar with the theory and history of wireless energy transfer, it’s time to move on to devices that support the technology. Speaking of support, we include in the list devices that received a receiver already at the factory (you can install it separately).

To date, more than 80 smartphones have received wireless charging using the Qi standard, not counting a number of smart watch models and other devices. And this figure is growing at an enviable rate. I will try to list as many models as possible - the exact list, which is regularly updated, is presented on the Qi portal.

So, wireless charging is integrated in the models (list updated in January 2019):

Apple

• iPhone 8
• iPhone 8 Plus
• iPhone X
• iPhone Xs
• iPhone Xs Max
• iPhone Xr

Asus

• Asus PadFone S

BlackBerry

• BlackBerry Passport
• BlackBerry PRIV
• BlackBerry Z30

CASIO

• CASIO G'z One Commando

Caterpillar

• Cat S50
• Cat S50C

DeWalt

• Dewalt MD501
• Dewalt MIL810G

Energy System

• Energy Phone Pro Qi

Fujitsu

• Fujitsu Arrows F-09D
• Fujitsu Arrows Kiss F-03D
• Fujitsu Arrows Kiss F-03E
• Fujitsu Arrows X F-10D

Google

• Google Nexus 4
• Google Nexus 5
• Google Nexus 6
• Google Pixel 3
• Google Pixel 3 XL

HP

• HP Elite X3

HTC

• HTC Droid DNA
• HTC Windows Phone 8X

Huawei

• Huawei Mate20 Pro

Kyocera

• Kyocera Brigadier
• Kyocera DuraForce
• Kyocera Hydro Elite
• Kyocera Torque G02
• Kyocera Torque KC-S701
• Kyocera Urbano L01
• Kyocera Urbano L03

LG

• LG G2
• LG G3
• LG G6¹
• LG G6 Plus¹
• LG G7
• LG G7 ThinQ
• LG Lucid 2
• LG Lucid 3
• LG Optimus F5
• LG Optimus G Pro
• LG Optimus It L-05E
• LG Spectrum 2
• LG Vu 2
• LG Vu 3
• LG V30
• LG V30 Plus

M.T.T.

• M.T.T. Master 4G

Microsoft

• Microsoft Lumia 950
• Microsoft Lumia 950 Dual Sim
• Microsoft Lumia 950 XL
• Microsoft Lumia 950 XL Dual Sim

Mlais

• Mlais MX69W

Motorola

• Motorola Droid Maxx
• Motorola Droid Mini
• Motorola Droid Turbo
• Motorola Droid Turbo 2
• Motorola Moto Maxx
• Motorola Moto X Force

mPhone

• mPhone 8

NEC

• NEC Medias PP N-01D
• NEC Medias X N-04E

Nokia

• Nokia Lumia 1520
• Nokia Lumia 735
• Nokia Lumia 830
• Nokia Lumia 920
• Nokia Lumia 928
• Nokia Lumia 929 (Icon)
• Nokia Lumia 930
• Nokia 8 Sirocco

Oukitel

• Oukitel U23

Panasonic

• Panasonic Eluga P P-03E
• Panasonic Eluga V P-06D
• Panasonic Eluga X P-02E
• Panasonic Eluga X1
• Panasonic Eluga X1 Pro

Philips

• Philips X723

Razor

• Razor Phone 2

RugGear

• RugGear RG730

Samsung

• Samsung Galaxy S6
• Samsung Galaxy S6 Active
• Samsung Galaxy S6 Edge
• Samsung Galaxy S6 Edge Plus
• Samsung Galaxy S7
• Samsung Galaxy S7 Active
• Samsung Galaxy S7 Edge
• Samsung Galaxy S8
• Samsung Galaxy S8 Active
• Samsung Galaxy S8 Plus
• Samsung Galaxy S9
• Samsung Galaxy S9 Plus
• Samsung Galaxy Note 8
• Samsung Galaxy Note 9
• Samsung Leader 8
• Samsung W2016

Saygus

• Saygus V SQUARED

Sharp

• Sharp Aquos EX SH-04E
• Sharp Aquos SH-07D
• Sharp Aquos SH-13C
• Sharp Aquos Slider SH-02D
• Sharp Aquos Zeta SH-06E
• Sharp Aquos Zeta SH-09D
• Sharp Q-Pot SH-04D
• Sharp SH-05D

Sony

• Sony Xperia Z3V
• Sony Xperia Z4V
• Sony Xperia XZ2
• Sony Xperia XZ2 Premium
• Sony Xperia XZ3

Techdy

• Techdy Basic Bear
• Techdy Bear Pro

Vertu

• Vertu Aster
• Vertu Signature Touch

Xiaomi

• Mi MIX 2S
• Mi Mix 3

YotaPhone

• Yotaphone 2

ZTE

• ZTE Telstra Tough Max
• ZTE Axon 9 Pro

This is not a complete list - there are also a number of models from lesser-known companies. Don't be surprised if it's not on the list popular iPhone. This is not a mistake. Apple has not yet officially integrated wireless charging into its products. But there is a way out, more on that below.

The smartphone models presented in the list only require the presence of a platform that is necessary for transmitting energy. As a rule, it is included with the mobile device, but not always. In this case, you will have to purchase a docking station separately.

Usually, the manufacturer produces a branded model, but you can use others - there is no special connection between the smartphone and a specific site. You can even order a cheap “noname” docking station, which in most cases will satisfy the buyer’s needs.

What to do if your smartphone does not support wireless charging

If you don’t find your device in the list of supported smartphones, don’t rush to get upset. There is a way out. More precisely, there are two of them. So, perhaps your phone is among those for which receivers (small plates with a built-in circuit) for wireless charging are specially produced. This list includes quite popular, but rather outdated models. There are exceptions, such as the iPhone 7.

Both popular and not outdated, and the manufacturer did not integrate the receiver. Receivers designed for certain models, receive the appropriate designation, as well as the necessary characteristics. For example, similar receivers for the Samsung Galaxy S 5 or older solutions have unusual contacts that match those found under the device cover. Here are the most popular models who received special receivers:

• iPhone: starting with “four”.
• Samsung Galaxy: S3, S4, S5; Note 2, 3, 4, Edge.
• LG: G4, V10.
• Sony: Xperia Z3+/Z4; Experia Z5; Experia Z5 Premium.
• Huawei: Ascend Mate 7, Mate S.

The receiver for these devices usually comes with a docking station. You can buy parts separately - there is no special connection. In addition to boards (receivers), there are also special cases on the market for wireless charging of devices, which contain a copper circuit inside. For each smartphone, a correspondingly shaped case is made.

Universal solutions

There are more and more devices that support wireless charging, but manufacturers are in no hurry to “import” the technology into the budget segment. And he is the most popular. Especially cheap smartphones are loved in China, where they came up with the idea of ​​​​producing universal receivers for any model.

A docking station + receiver set costs about 500-700 rubles (you can find it cheaper), the main thing is to choose the right one for your smartphone. Pay attention to the shape and connector. A universal receiver can be found for almost any smartphone.

Docking stations

So, we figured out the support for wireless charging on smartphones. Now I would like to dwell separately on the platforms that are used to transfer energy to the device. For what?

Unlike receivers, which are either hidden inside the phone or are a faceless plate, docking stations allow the user to choose the model they like. Some companies even provide original solutions that will become part of any interior.

Particularly popular is the wireless charging dock from Samsung, made in an oval shape. It is suitable not only for charging the company’s smartphones, but also for most other models.

Among the features, it is worth highlighting support for automatic shutdown when the device is fully charged, as well as light indication. The average cost is 2,000 rubles, but in Chinese online stores you can find a cheap replica for 400-700 rubles.

The Woodpuck FAST Edition Bamboo playground model, which is made of wood, is also interesting. The manufacturer, so to speak, has combined modern technologies and natural materials. The functionality is no different from other docking stations, but it looks catchy. Cost – 40 dollars.

But Aukey QI boasts compact dimensions that allow you to take the charger with you. Yes, and the price is low - $30. Fans of purchases from China have huge catalogs to choose from, in which it will not be difficult to choose a cheap and beautiful docking station.

Some unusual wireless charging stands include: new TV from Asus – Designo Curve MX34VQ. More precisely, the leg on which it stands. It is made in the form of an oval platform on which the smartphone is placed for charging. It even has a backlight. Asus, following modern trends, has made the new device not only beautiful, but also useful. True, the price is steep.

Bottom line

It's safe to say that the list of devices that support wireless charging will only grow. A technology that can eliminate a lot of wires is of interest to both the user and the manufacturer, who receives additional income for its presence.

In a couple of years, every smartphone will probably support wireless charging. In addition, a dozen companies are working on developing even more advanced technology that will not be tied to a docking station. We, ordinary users, just have to wait a little to forget about the main problem portable devices– attachment to the outlet.

• 1. What is Qi wireless charging?

  The world is becoming mobile and wireless.

  In the modern world, all manipulations with file transfer using a smartphone occurs “over the air”. Access to the Internet via wi-fi - at home, at work, in cafes - is taken for granted, and rarely does anyone have difficulty using it. The time has come forwireless power transmission.

  Was founded in 2008 " Wireless Electromagnetic Energy Consortium" (Wireless Power Consortium, WPC), which united manufacturers from Europe, Asia and America. The goal of the Consortium is to develop a unified standard for wireless charging technology.

  Already in 2009 the company Palm provided the first phone with wireless charging support. Later, in September 2012, Nokia introduced 2 smartphones to the market - Lumia 820 And Lumia 920 also supports Qi standard. Next came the big smartphone manufacturers - Samsungg, Google Nexus(Asus, LG), Sony, etc.

  Since 2014, our company Zaryadqi has been developing and distributing wireless chargers in Russia. Our store has the largest selection of wireless chargers and we are constantly monitoring new products and expanding our range. You will definitely find one for yourself suitable charger in our store.

• 2. Operating principle

  In simple terms:

  • The charger is connected to a power source.
  • A magnetic field is created.
  • The smartphone must support wireless charging - have a built-in receiver or an additional receiver.
  • The phone is placed on the charger.
  • Charging the smartphone starts automatically.

  From a technical point of view:

  Energy is transferred from the transmitter to the receiver through an interconnected magnetic field generated by the flow of alternating current through the transmitter coil.
  If the receiver coil is in close proximity, a significant portion of the transmitter power lines will pass through the receiver coil, creating AC in the receiver, which is then converted to DC voltage.

• 3. Benefits

  Just. Place your smartphone on a Qi wireless charger and it will start charging automatically.

  Modern. All major IT companies are already developing their devices using the Qi standard.

  Versatile. Any device with a Qi receiver can be charged using any Qi wireless charger.

  Safely. The generated electric field is safe for humans and extends only 1 cm from the device.

  Comfortable and convenient. There is no need for a bunch of wires that later get tangled or simply lost.

• 4. Phone models that have a built-in receiver and support wireless charging out of the box

  More and more smartphone manufacturers are starting to build receivers into their top models: Apple iPhone XS, XS MAX, XR, X, etc., Samsung Galaxy S9/S9+/Note 9, Xiaomi Mi Mix 2S, Huawei Mate 20 Pro etc.

  • Asus padfone s

  Blackberry

  • Blackberry Priv
  • Blackberry Z30
  • Blackberry Classic
  • Blackberry Passport
  • Blackberry 8900
  • Casio g"z one commando

  Caterpillar

  • Cat S50
  • Cat S50C
  • Dewalt md501
  • Dewalt mil810g

  Energy System

  • Energy Phone Pro Qi
  • Fujitsu Arrows F-09D
  • Fujitsu Arrows Kiss F-03D
  • Fujitsu Arrows Kiss F-03E
  • Fujitsu Arrows X F-10D
  • ZTE Telstra Tough Max
• 5. For some phone models, special receivers are available to support wireless charging
• 6. How to use wireless charging

  

• 7. Types of wireless chargers

  We conditionally divide wireless chargers into several types based on functionality:

  • . Standard charging stations in the form of a small “platform” on which the phone is placed, or charging built into equipment - a lamp, clock, weather station, etc.
  • . Wireless charging for use in the car: with special holders and brackets for the phone and adapters for the cigarette lighter.
  • . Wireless chargers with stand function, i.e. The phone is at an angle while charging convenient viewing video, mail, social networks.
  • . Wireless chargers with a built-in battery differ from each other, in addition to design, in the number of additional USB ports and battery capacity - from 4000 mAh to 10000 mAh.
  • . Wireless chargers for installation in tables, cabinets, bar counters. They have a special design and protection from moisture and dust.

  And also by scope or place of use:

  • Home/office
  • In the car
  • On the road
• 8. There are receivers
  • Built-in- already installed in the smartphone by the manufacturer.

  If the manufacturer of your phone does not provide the possibility of wireless charging, you can easily adapt it to this charging! For this, a special receiver film is used - there are several types:

  • In the form that is installed under the cover of the smartphone. To do this, your phone must have special contacts
  • , which connects to the lighting power port for Apple and micro-usb for Android smartphones.

  Image	Description
  	The film is attached under the cover of the phone, the functionality of the phone is not reduced. The standard cable can be used simultaneously with the installed receiver film. Such receiverQifor phones with special contacts Suitable for phones that have special contacts for wireless charging: Samsung Note 4, Samsung Note 3, Samsung Note 2, Samsung Galaxy S5, Samsung Galaxy S4, Samsung Galaxy S3 and others.
  	The film is attached to the back surface of the phone. At the same time, it can be covered with any standard case: leather, plastic, silicone - this will not affect the charging process. The connector, inextricably linked to the film, for charging according to the Qi standard must be in the Lightning connector. Having a film receiver does not cause any inconvenience. Such Apple-receiverQi suitable for Apple devices with Lightning connector: Apple iPhone 5, 5s, 5c, 6, 6s, 6Plus, 6SPlus, SE, 7, 7 Plus; iPad Air 2, iPad mini and others (Apple in present moment does not provide wireless charging without accessories)
  	Such universal receiverQi Suitable for any phone equipped with a USB connector for classic wired charging. The film is attached under the cover or case of the smartphone. The plug, inextricably linked to the film, for charging according to the Qi standard must be located in the Micro-usb connector. Having a film receiver does not cause any inconvenience.

  On phones with Micro-USB port The connector can be one of three types, depending on its type, if you place the phone on top of the screen.

  Type C connector appeared relatively recently - it can be found on a small number of devices. Thus, type “C” is equipped with MacBook 12", Samsung TabPro S, Google Nexus 6P, Microsoft Lumia 950 XL, ZUK Z1, Google Pixel C, Google Nexus 5X, One Plus 2, Acer Aspire Switch 10 V and other devices.

  In addition to the above receivers, depending on the location of the connector in the phone, such film-receivers may be suitable - they are called lateral or offset:

  

  Accordingly, each type and position of the connector requires its own Universal receiverQi. Having correctly determined the type of Micro-USB connector in your phone, you will buy correct receiver for wireless charging and let yourself go wire-free!

  • There are also: the receiver is already built into the case, so you just need to put the case on your phone and it will be able to charge wirelessly.

  

  You can always tell the online store manager your phone model - we will select the optimal receiver for you!

• 9. Difference between wired and wireless charging

  Wireless charging produces a current of 1 ampere and a voltage of 5 volts. The standard power adapter that comes with the smartphone produces from 1 to 2A. And when charging the phone from a computer (USB port), the phone is charged with a current from 0.5A (USB 2.0) to 0.9A (USB 3.0).

  In this regard, you will not even feel the difference in charging time or it will not be significant.

• 9. Energy efficiency

  Energy efficiency of wireless chargers Qi is approximately 80%. It is worth understanding that it is simply impossible to achieve 100% energy efficiency; for standard wired chargers this figure ranges from 75% to 95% at best.

• 10. Security

  Wireless chargers use non-ionizing frequencies that do not have harmful physiological effects on humans. The Qi 1.2 standard includes detection of foreign objects in the range of the charger, providing additional safety of use; Charging is only possible with Qi-compatible devices. Also, our chargers and smartphones have built-in safety mechanisms based on thermal control.

Still have questions?

The increase in battery capacity in modern smartphones results in an increase in recharge time. To speed up the process, manufacturers are developing new technologies such as QuickCharge, VOOC or PumpExpress. However, all of them are only designed to reduce the time spent on charging, but do not present anything radically new. Another development path is wireless charging. This promising direction, although slowly, is developing.

The convenience of wireless charging lies in the fact that you do not need to get tangled in wires and aim the cable plug at a small connector. The speed still leaves much to be desired, but you can recharge your smartphone simply by placing it in close proximity to a special source electromagnetic radiation. Smartphones that support wireless charging and are relevant in 2016 will be discussed in the selection.

In February 2016, the company introduced a pair of new flagships, the Galaxy S7 and S7 Edge. Now they can be purchased at prices ranging from $550 and $600, respectively. Both smartphones are different high level productivity, great cameras and support for wireless charging. They can replenish the battery capacity through Qi standard pads (the more popular one). The PMA wireless standard is also supported. In general, the devices are balanced and good in everything.

• Screen: matrix Super AMOLED, resolution 2560x1440 pixels, flat 5.1" (S7) or curved 5.5" (S7 Edge)
• Processor and graphics: Samsung Exynos 8890, 8 cores + Mali T880 MP12 GPU, or Qualcomm Snapdragon 820, 4 cores + Adreno 530 GPU (depending on the market)
• Memory: 4 GB RAM, 32 or 64 GB permanent + MicroSD
• Camera: 12 MP resolution, 1/2.5" size, 1.4 micron pixel size, f/1.7 aperture, DualPixel full phase detection autofocus), flash, OIS ( optical stabilization), 4k video recording, front – 5 MP, f/1.7
• Battery: 3000 mAh (S7), 3600 mAh (S7 Edge)
• OS: Android 6

The combination of advanced functionality and premium design makes these smartphones one of the best in 2016. By and large, they have nothing to complain about at all (except for the not very affordable price).

Samsung Galaxy S6 and S6 Edge – thin flagships

Despite the fact that the Samsung Galaxy S6 and S6 Edge were released last year, they remain relevant in 2016. Nowadays, you can purchase the devices from $400 or $500, respectively. In addition to the top-end hardware at the time of presentation (which is still not listed as an outsider), the smartphones received thin cases. Both models support Qi (Qi) and PMA fast charging.

Samsung Galaxy S6 and S6 Edge are powerful and balanced smartphones that can now be bought for reasonable money. One of the disadvantages is the lack of a slot for a flash drive.

LG Nexus 5 – compact ex-flagship

3 years have passed since the release of LG Nexus 5, but it’s difficult to call it ancient. The smartphone remains relevant in 2016, although it can no longer compete with flagships. It is equipped excellent display and a good camera that can give a head start to some newer models with 13 and 16 MP. LG Nexus 5 supports Qi wireless charging. You can now find a smartphone starting at $160.

The smartphone is quite capable of competing with mid-budget devices in 2016 (and surpassing them). The disadvantages are the lack of a slot for a flash drive and a small battery.

Motorola Nexus 6 – phablet with a large screen and stereo sound

The large Google phone Motorola Nexus 6 came out 2 years ago, and in the fall of 2016 it looks like a strong middle peasant. Large screen with high resolution, laconic design – these are the main advantages of the device. The smartphone supports wireless charging using the Qi standard. The price of the phablet at the time of compiling the selection is from $270.

• Display: AMOLED, 2560x1440, 5.96"
• Processor and graphics: Snapdragon 805, 4 cores + Adreno 420
• Memory: 3 GB RAM, 32/64 GB permanent
• Camera: 13 MP, 1/3", 1.4 µm, f/2, autofocus, flash, OIS, 4K video, front – 2 MP, F/2.2
• Battery: 3220 mAh
• OS: Android 5, update to version 7

Traditionally for Nexuses, the Motorola Nexus 6's main disadvantage is the lack of MicroSD. But the advantages of the Motorola Nexus 6 include stereo speakers on the front panel.

LG G3 D855 – phablet with thin frames

Released in the summer of 2014, the LG G3 D855 is a flagship device at that time, or a mid-level device for the fall of 2016. Considering that you can now buy it for $180, its venerable age by mobile standards does not matter. Moreover, the device has thin frames (the screen occupies more than 75% of the front panel), and is also equipped with a dedicated DAC and a Qi wireless charging module.

• Display: IPS, 2560x1440 pixels, 5.5"
• Processor and graphics: Snapdragon 801, 4 cores + Adreno 330
• Memory: 2 or 3 GB RAM, 16 or 32 GB permanent + MicroSD
• Camera: 13 MP, 1/3", 1.12 µm, f/2.4, phase detection + laser autofocus, flash, optical stabilization, 4K video, front – 2 MP, f/2
• Battery: 3000 mAh
• OS: Android 4.4, update to version 6

Thanks to big screen with high resolution, compact (for 5.5") dimensions and a good battery - the smartphone is still on sale and has admirers.

Microsoft Lumia 950 – the last of the Mohicans

In 2016, fans of the Windows Phone OS received sad news: Microsoft stopped producing Lumia series smartphones. The last flagship released based on this system at the end of 2015 was the Microsoft Lumia 950. The device received the top-end hardware at that time and a Qi wireless charging module. Now you can buy a Microsoft Lumia 950 by paying $350 or more.

• Screen: AMOLED, 2560x1440, 5.2"
• Processor and graphics: Qualcomm Snapdragon 808, 6 cores + Adreno 418
• Memory: 3 GB RAM, 32 GB storage + MicroSD
• Camera: 20 MP, 1/2.4", 1.12 µm, f/1.9 Carl Zeiss, autofocus, flash, OIS, 4K video recording, front – 5 MP, f/2.4
• Battery: 3000 mAh
• OS: Windows 10 (Phone)

Microsoft Lumia 950 is one of the best Microsoft smartphones of all time. For fans operating system from MS, who do not want to part with it, this is the optimal device.

Samsung Galaxy Note 5 – a thin phablet with a stylus

Released in the summer of 2015, the Samsung Galaxy Note 5, due to the unsuccessful release of its successor, in 2016 remains the last successful flagship in this line. The device is equipped with hardware that is still relevant today, a good camera, and also has a large ratio of front panel to display area (76%). It is equipped with wireless charging that works with the Qi standard. PMA wireless charging is also supported. You can buy a Samsung Galaxy Note 5 by paying from $570.

• Screen: Super AMOLED, 2560x1440 pixels, 5.7"
• Processor and graphics: Exynos 7420, 8 cores + Mali T760 MP8
• Memory: 4 GB RAM, 32/64/128 GB ROM
• Camera: 16 MP, 1/2.6", 1.12 µm, f/1.9, phase detection autofocus, flash, optical stabilization, 4K video, front – 5 MP, f/1.9
• Battery: 3000 mAh
• OS: Android 5.1 Android update 6

Among the advantages of the Samsung Galaxy Note 5 we can also note a dedicated DAC and a proprietary stylus, and the lack of a memory card slot can be noted as disadvantages.

Other smartphones

Other smartphones that support wireless charging that are not included in our selection:*

• ZTE V975 Geek
• Nokia Lumia 930
• Nokia Lumia 920
• Nokia Lumia 925
• Nokia Lumia 1520
• Nokia Lumia 720
• Nokia Lumia 810
• Nokia Lumia 820
• Nokia Lumia 822
• Nokia Lumia 928
• Samsung Galaxy Note Edge
• Blackberry 9700
• Blackberry 9700
• Fujitsu F-03D
• Fujitsu F-09D
• HTC 8X
• HTC Droid DNA
• HTC Droid Incredible 2
• HTC Droid Incredible 4G
• HTC Rezound
• HTC Thunderbolt
• LG Optimus G Pro
• LG Spectrum
• LG-Google Nexus 4
• LG Lucid 2
• LG Optimus F5
• Motorola Droid Bionic
• Motorola Droid 4
• Motorola Droid 3
• NEC N-01D
• NEC N-04E
• Panasonic P-02E
• Panasonic P-06D
• Pilips Xenium
• Sharp SH-02D
• Sharp SH-04D
• Sharp SH-04E
• Sharp SH-05D
• Sharp SH-07D
• Sharp SH-09D
• Sharp SH-13C
• Sharp SH-13C
• Sony Xperia Z

*in fact, there are more smartphones that support wireless charging, and some of the list only support separately connected pads with an over-the-air charge receiver. Find out about the smartphone you are interested in in the comments to this article. You can also expand this list by writing your smartphone model in the comments.

There are special adapters that you can purchase and install yourself under the cover of your smartphone, and the device will support wireless charging. They are connected via contacts for the NFC antenna. You can see what it looks like in the video after the list of smartphones that support similar adapters:

• Samsung Galaxy S3
• Samsung Galaxy S4
• Samsung Galaxy S5
• Samsung Galaxy Note 2
• Samsung Galaxy Note 3
• Samsung Galaxy Note 4

There are similar adapters for the iPhone, but they are connected via a connector and have a small cable so that the cover with the charge receiver can be folded and attached to the back cover. However, the practicality of such a design is questionable.

Besides similar devices, in the Chinese market you can find adapter cases for iPhones with the ability to charge a smartphone wirelessly, but in this case you will have to sacrifice thickness.

There are options, like the Jiayu G6 smartphone, which has an open adapter connector on the back cover. However, to use wireless storage, you will need to purchase original case for smartphone.

If this is your first time hearing about wireless charging technology, we strongly recommend that you read the material here.

From the world by thread

So, at MWC 2013 (Mobile World Congress, for that matter), the presentation of wireless charging looked somewhat generalized compared to the previous year. And it seems that we have all already seen this.

Let’s remember that in 2012, Duracell dedicated a separate stand to wireless charging, showing entire sets of devices for no more than $130 (price in the USA). Among the new products, the company also introduced the Wireless Charging Card - a special insert that could be placed under the cover of almost every mobile device without harming the strength of the case. With a thickness of less than 1 mm, the liner does not lead to the formation of backlashes or loose contact of the cover with the body of the smartphone. The Wireless Charging Card today has many analogues, and this development was not the first of its kind.

In addition to Duracell, the wireless charging stand was also prepared by the Wireless Power Consortium Association, which, by the way, came up with the idea of ​​​​standardizing wireless charging technology (later called Qi, read as “qi”). The WPC includes dozens of the largest companies from around the world. Offhand, among others there are Energizer, Samsung, LG, Philips, Nokia, Sony and, more recently, the same Duracell. In addition to Qi, the Association earned another big plus in its karma by making all its certified products compatible. Those. Qi charger from Nokia It can charge not only the brand’s own smartphones, but also any other gadget that meets the generally accepted standard. And if suddenly you carry a smartphone with a Duracell insert in your pocket, you can also charge your mobile phone on any of the Qi-supporting bases.

This year there was only one stand. Developments have not gone far technologically, but a couple of innovations have nevertheless appeared: firstly, in 2012, it was possible to charge mobile communication devices using Qi and only because... the maximum power of 5 watts was enough for this. The 35-watt charging prototype, also presented at the World Congress, did not look very confident, so consultants immediately hinted that the device was still at the development stage. At the current MWC, devices with a power of up to 120 watts have already been presented, which is enough to charge tablets.

The inductive charging principle has not yet allowed manufacturers to change the shape of the dispensing and receiving parts of the device. Wireless charging is essentially two coils - distributing and receiving - between which a magnetic field arises. Often simple internal structure We don’t see a charger, but some manufacturers have managed to beat it. Thus, the ring-shaped PowerKiss adapters caused particular joy, thanks to which you can even charge phones without a built-in Qi module.

PowerKiss, due to the release of several modifications of the USB connector, can be connected to absolutely any phone or smartphone, lay the gadget flat on the station and enjoy wireless charging. They are produced in different colors, which can also add to the useful characteristics of the device.

At MWC 2013, PowerKiss was shown again, and with it some very smart solutions for adapting the transmitter. They propose to make it not in the form of a separate object, but, for example, to discreetly adapt it to a specific interior: instead of the usual mat or stand, the base can be located in the arm of your sofa, or in the lid of a multimedia center or speakers.

The latter option has already been embodied in TDK products: the Wireless Charging Speaker Q35 looks stylish, and, in addition to its intended purpose, it also charges your cell phones.

Price issue

Unfortunately, we did not get our hands on any of the listed devices, so we will limit ourselves only to general specifications and, in fact, price tags.

Devices that support wireless charging technology can be divided into two categories. Those in which this feature is included by the manufacturer are called “Qi Integrated”. Phones that support Qi out of the box will be slightly larger than others. But you don’t have to glue inserts under the cover or connect any other parts built into the case. You will need to buy a distribution base and that’s basically all.

The “Qi Ready” category includes devices that are Qi-ready, but require a technological upgrade to ensure full-fledged work technologies. In this case, both the transmitter and the receiver will appear on the shopping list.

True, you most likely will not see either the first or second designation on the device box. Manufacturers often simply limit themselves to mentioning the ability to connect a smartphone or tablet to Qi. You can only find out which phone you got by opening the package. Or, let's say, from detailed reviews this model.

See the table of phones that support Qi below. Compatible models released as of early 2013 are shown here.

On sale, as you might have guessed, you can find both a Qi-charging kit and a base and receiver separately. For example, the Philips DLP7210B kit is a case for the rear panel of the device with an energy-receiving coil, as well as a base for transmitting charge. The Qi charging kit for the Samsung Galaxy S4 is made using a similar principle.

Production subtleties

With Qi, the charger market has expanded significantly. Judge for yourself: if earlier we were somehow not very picky about the design of adapters, now we have the right to turn our noses a little. The consumer chooses the device based on its shape, color, and how it is attached to the phone. At the same time, not limiting ourselves to the offers of only one brand that has released a consumer-owned gadget.

Perhaps the simplest option is to place a receiver chip under the device’s body if your smartphone or tablet did not initially receive one. Firstly, this will not affect the external condition of the phone: it will still be hidden under the cover! And secondly, it will not significantly affect the weight of the gadget.

The cost of the receiver plate is low: for example, universal for everyone Samsung smartphones the plate can be purchased from $11 starting. The complete set (base and receiver) will cost about $62.

Another “inconspicuous” option for connecting your phone to Qi is a replaceable back cover with a built-in receiver. Such, as we have already said, are also in the catalogs of Nokia, Philips and Samsung.

The advantage of the back cover with a Qi receiver is that, although it somewhat thickens the body of the device, it also serves to protect the gadget. Such gadgets do not have armor-piercing properties, but, in theory, the phone will be more intact.

A branded cover for Nokia Lumia phones will cost about $27. Note that the manufacturer produces them in several colors.

Another form of receiver is one that connects via the PowerKiss USB port. This one costs about $34/piece. (in the USA). This project is interesting in that it is aimed, rather, not at individual use, but at mass use: furniture with built-in Qi bases, as well as PowerKiss rings scattered on the surface, may soon appear in airports, waiting rooms at train stations, cafes, libraries and other public places where such an innovation will deservedly receive nationwide gratitude.

PowerKiss, by the way, solves the problem of connecting smartphones to Qi bases that, although they have a non-removable back cover, did not receive the corresponding wireless charging module during production. Removable panels with a Qi module can still be attached to such smartphones. But when purchasing a kit, you need to carefully read the device specifications: not all receivers are capable of efficiently transmitting energy through the cover. And PowerKiss provides direct communication with the device’s battery, so you’ll have a better chance of charging the battery faster with just such a “ring.”

Speaking of efficiency. The efficiency of most wireless chargers is no more than 80%. This does not mean that your phone will lack something, it’s just that the technology is still imperfect and you need to carefully follow the instructions in the operating instructions to improve the level of Qi performance in each specific case.

Rarely, but sometimes particularly honest manufacturers admit that their device will not be able to work to its maximum, no matter how hard you try. For example, the description of METRANS Wireless Transmitting Terminal MWT02 clearly states: the maximum operating efficiency is 73%. At a price of almost $78, this is a quite frank warning.

If Qi, as seen in the example of PowerKiss, is just being planned to be integrated into the interior, particularly enterprising owners of wireless chargers manage to independently place charging bases under the covers of bedside tables or coffee tables. The following video clearly shows how easy it is latest technologies lend themselves to such creative experiments.

Now a little about the forms of distribution bases.

The most common option: a pad-shaped base, i.e. stands.

Let us remind you that in order to wirelessly charge the gadget, it must be closely adjacent to the base. The maximum distance by which the device can be raised today for continuous energy transfer is only 4 cm!

Below you can watch a test of the Qi system from Nokia a la “charging with obstacles”.

The horizontal position of the smartphone, on the one hand, is most convenient for typical scenario: came, threw the phone on the table. On the other hand, it is much more convenient to use a smartphone while charging if the same platform has a certain lifting angle: not enough for the smartphone to slide off, but making it easier to work with the device if it is suddenly needed.

Strictly horizontal bases can be found in the catalogs:

• Zens (charger for one smartphone costs $65);
• Energizer (Dual Inductive Charger base allows you to charge up to three devices: two via Qi, and the third via standard USB port; the model’s body is slightly inclined, which is much better for the office charging option than the flat version; this one costs $89);
• Duracell (the silver Powermat pad costs $34 and is designed to charge one smartphone; it has a nice square shape with rounded edges);
• Nokia (DT-900 base is no larger in size than a computer mouse; suitable not only for Nokia phones; price $47).

Another “flat”, but non-standard option is presented by TDK: the Q35 Qi Wireless Charging Speaker costs $199 and is a speaker placed in a modern cubic case, on the top edge of which, in fact, the distribution coil is mounted.

how to charge Galaxy S7 and S7 edge faster using wireless charging [added 04/03/2016]

Most wireless Qi chargers output a standard 1 ampere load (voltage 5 volts).

However, smartphones are already equipped with built-in charging systems capable of receiving heavy load(up to 1.4 amperes, according to according to Samsung), thanks to which they can charge from a wireless charger one and a half times faster than other smartphones.

However, only on condition that they are connected to the so-called one, that is, one that is capable of providing an output of 1.4 amperes. From regular ampere charging S7 and S7 edge also charge at normal speed.

It is known that Sansung has already begun to produce Wireless Charging Stand models that support such “fast” charging, and in which, by the way, the smartphone is placed not horizontally, but vertically, so that it is much more convenient to use during charging.

These new Qi-storage devices are already on sale. As for prices, according to preliminary data, the Wireless Charging Stand at retail will cost about $80.

Here is a short video for clarity (in the settings you can enable translation of subtitles, so that “in general terms you can understand what a foreigner is talking about”):

What is Qi wireless charging?

In short, “Qi” (that’s how the word Qi is pronounced) is the world standard batteries user-class mobile devices. Qi allows wireless charging of batteries compatible devices through inductive energy transfer. Simply put, you simply place your smartphone on a special transmitter plate without having to connect it to an outlet via a power supply or via a cable to a computer's USB port.

Where is Qi wireless charging used?

To date this technology, like Wi-Fi, is widely used in hotels, airports, train stations and other public places. In addition, Qi charging is also available in the form of inexpensive and compact devices designed for use at home or in the office. Like, for example, the ultra-thin wireless charger made by EC Technology, which costs $21 on Amazon.

can I use Qi?

Yes. If your smartphone supports Qi technology, then any Qi wireless charging will suit you. Moreover, you don’t have to spend money only on expensive models that are recommended as an official accessory by the manufacturer of your smartphone. Any high-quality Qi charger from so-called third-party brands will also work.

What is the Qi charging power?

Low-power Qi wireless charging is capable of delivering up to 5 watts of power at a distance of up to 4 cm (in theory), and the medium-power model can deliver up to 120 watts. In practice, the mentioned Qi charging EC Technology can charge Nokia smartphone Lumia 735, which is located no more than 2 cm above the transmitter. Therefore, the optimal option is when both devices are in direct contact with each other.

How quickly can Qi wireless charging charge the battery of a smartphone or tablet?

As a rule, smartphones, and even more so tablets, are charged noticeably slower through a Qi wireless charger than through conventional chargers. For example, Qi charging EC Technology supports a current of 1A, which is quite enough to recharge a smartphone battery at a normal pace, but not enough to fast charging batteries of the Nexus 7 tablet, whose standard charger produces 2A.

Qi wireless charging: how to use it?

Step 1 . We plug the Qi charger into a power outlet (yes, it charges wirelessly, but it works from the mains) or connect it to the USB port (EC Technology has a USB cable included in the package) of a computer, tablet or external mobile battery.

Step 2 . First, let’s check again whether our smartphone (or tablet) supports Qi wireless charging technology. Data can be found in the model specification. For smartphones with removable back panels, elements of the Qi system can be seen on the back of the cover. In addition, some manufacturers produce Qi adapters for models that do not support Qi charging natively. For example, for its Galaxy S4, Samsung developed back cover with Qi, which can be installed in place of the usual one.

Step 3 . Just place your smartphone on the wireless charging pad. You will feel it begin to vibrate and see the color of the indicator light change, which means the battery has begun to charge. Upon completion of the procedure, we take the smartphone from the panel.

back panel Nokia Lumia 735 smartphone with Qi system elements

Actually, this is how Qi wireless charging works. For the average user, of course