Types of smartphone screens and how to choose protective glass for them. “Liquid protection” for the smartphone screen: true or fake

Since ancient times, films have been the most popular means of protecting the phone display. At a time when touch screens were still resistive, the plastic top layer was quickly wiped, scratches collected on it, and if dropped, the sensor could be damaged and become unusable. However, the film is scratched, is not 100% transparent, impairing visibility, and the finger does not always glide over it well. With the advent of thin and transparent tempered glasses, as well as the development of oleophobic coating technology, protective glass began to be offered as an alternative to films. As their manufacturers assure, such coatings save the screen from scratches and impacts. But do you need a protective glass on your phone? This material will help you find out.

Tempered glass is ordinary glass that has undergone physical and chemical treatment. During the manufacturing process, it is subjected to high-temperature heating and is also etched in special reagents. During processing, the structure of the substance in the glass changes, and some ions (weak) are replaced by stronger ones. Due to this, the mechanical strength of the glass increases, its hardness increases, and it becomes resistant to scratches and impacts.

Do you need a protective glass on your phone?

Despite all the advantages, tempered glass has one important drawback. As resistance to impacts to the plane increases, it loses the ability to withstand impacts to the end. Therefore, the touch screen of a smartphone that can withstand being dropped flat on asphalt can crack if hit at an angle. The author of the article remembers only one case when the phone’s sensor broke when hit in the central part. The illustration shows a Xiaomi Redmi Note 2 phablet that fell from a height onto rocks. After damage, the touchscreen remained operational.

Dozens of broken touchscreens that came into our hands had cracks extending from the edges into the depths (as in the photo below). This indicates the unprecedented strength of tempered glass and resistance to plane impacts. It's durable enough to withstand normal accidental drops. It is on this basis that a logical question arises: do you need protective glass on your phone? After all, the touchscreen itself can withstand impacts.

To answer the question, it is worth considering other features of modern mobile technology. It is impossible to give a universal answer for everyone, since modern smartphone displays are produced using different technologies, and their mounting methods also differ.

The only 100% effect of protective glass is protection from scratches and abrasions. It also (if there is an oleophobic layer) makes using the smartphone more pleasant. However, this applies more to inexpensive phones, since flagships resist scratches well and have excellent oleophobic coating.

Does safety glass help in case of a fall?

It is impossible to say unequivocally whether protective glass for a phone helps if it falls. Here, too, everything depends on the type and method of installing the sensor. Read more about each of the popular types below.

OGS displays with 2.5D touchscreen

OGS displays are touch screens whose matrix does not have its own thick protective coating. Its role is played by the touch glass, tightly glued to the screen module with transparent glue. 2.5D is a type of touchscreen whose glass does not have the usual edges, since its edges are chamfered and ground. Apple was one of the first to implement OGS and 2.5D technologies in its iPhone.

Such sensors are not framed by the body and smoothly blend into the side frame of the smartphone. For this reason, it is impossible to glue the protective glass beautifully: it will either hang over the beveled edges, forming an air gap there, or it will not cover the entire area of ​​the screen, leaving the edges (the most vulnerable part of the sensor) without protection.

The behavior of protective glass glued to a 2.5D screen depends on its quality, as well as the impact characteristics. If a fall occurs from a great height and the phone hits the display surface, the low-quality protective glass (less durable than the “original” glass) will burst, leaving the touchscreen unharmed. Without it, a blow of such force would not have had destructive consequences for the parts.

A high-quality protective glass may remain intact if dropped, but the sensor underneath will burst. This is due to the fact that it fits closely, has higher strength than a touchscreen, and its high rigidity does not allow it to absorb the shock impulse, which is fully transmitted to the screen.

Example: If you put a sheet of iron on a piece of glass and hit it (the sheet) with a hammer, the glass will burst, leaving the steel sheet unharmed, since it is stronger.

Two glasses and plastic film:

The 2.5D sensor remains vulnerable to an end impact (the most dangerous) even when protected, since the edges of the glued glass do not cover the ends. In the event of a destructive blow to the edge, the touchscreen will burst, regardless of the presence/absence of a protective coating.

Based on the above, the conclusion suggests itself: a 2.5D display does not need protective glass. It is worth gluing it only to protect it from scratches, since it will not be able to save you from a destructive blow.

OGS displays without 2.5D

In the case of regular sensor glass (without polished edges), the answer to the question “Do you need glass for your phone?” will be almost the same as in the previous case. The only difference is that the coating also protects the edges of the sensor. Thanks to this, there is little use for it, since when hit in a corner, the protection may simply move or burst, but the screen itself will remain intact. Therefore, protective glass can be glued to such a screen. Although it is of little use, it does provide protection against some blows. And this coating also saves you from scratches and abrasions.

Air gap displays

For screens with an air gap, the sensor and matrix are separate parts. They are connected around the perimeter with glue or double-sided tape, but between the surface of the display and the touchscreen there is a layer of air, 0.1-1 mm thick. This design makes the sensor more vulnerable, since it has room to bend when hit. Although modern glass can withstand slight bending, in this position its strength decreases significantly.

A flat impact, which does not pose a serious danger to OGS screens, can cause significant damage to a smartphone. When falling on a stone, a local deflection of the glass occurs towards the matrix. It cracks, and if the shock impulse is sufficient, the matrix will also suffer and receive a pinpoint blow. In the case of OGS, the risk of this is reduced, since the sensor distributes the impact over the entire plane of the matrix, reducing the destructive impact.

If you glue protective glass onto the screen with an air gap, it sticks tightly to the sensor, forming a kind of sandwich. Thanks to this, the sensor turns into a kind of triplex (composite laminated glass), more resistant to shock than single-layer glass. Its flexibility is reduced, and even if a destructive blow can damage the sensor, the matrix will survive. And replacing just the touchscreen will cost about half as much as the entire screen.

For displays with an air gap, protective glass can and should be installed, as it will actually protect against plane impacts. And considering that only budget smartphone screens are now made without OGS, normal glass will protect from scratches and your finger will glide over it more easily.

Conclusion

Under no circumstances should you rely on protective glass as a panacea for broken screens. In the event of a slight impact, the strength of the touchscreen is quite enough to survive a fall from a meter height. But a blow to the end will most likely cause serious damage to the screen module, regardless of the presence/absence of glass. In this regard, flagships and simply good smartphones equipped with an OGS panel with 2.5D edges (or 3D, like the top-end Samsung Galaxy S7 Edge) are the most vulnerable. For them, protective glass is just a way to protect the phone from scratches.

Despite the fact that modern phones have long been equipped with reliable and durable displays, you still want to somehow secure your device. However, hyper-accuracy awakens to all new things. Only after a while, when you get used to them a little, do you begin to love them less. Same with smartphones. Time passes - and they are already thrown, and not put down, they often sit down and put down cups of coffee. But that's all later.

Now that the brand new device has just been taken out of the box, it needs to be protected from all sorts of dangers. To do this, a case is put on the case, and a film is glued to the display. Which one is better will be discussed below.

What is a protective film?

There is no need to consider screen film as some kind of high-tech product. They learned how to produce plastic a long time ago, but it was simply not needed for such purposes. Typically, films have three layers, and the topmost layer provides protection. The middle layer should absorb ultraviolet radiation from the phone, and the bottom one - silicone - should stick to the screen.

It is very important to be able to properly stick the film if you decide to do it yourself. Just before doing this, it’s better to think several times, because you will have to carry out a whole range of measures. But more on that a little later. And now, in continuation of the topic of what is better - glass or film on a phone, let's figure out what types of soft plastic are found.

Types of protective film

So, there are three main types of such films: glossy, matte and mirror. Why so many types? After all, in essence, this accessory is a small piece; what are there to choose from? But the fact is that when films became popular, people began to buy them often, and there was a need to expand the range. Each of the existing films today has its own properties that need to be considered.

Glossy film

Many people, thinking about what is better - film or glass for a smartphone, settle on this option. It is suitable for those who value practicality first of all, because as far as the protective function is concerned, it is fulfilled. By dressing your device with such an accessory, you can be sure that the image quality will not suffer. True, there are also disadvantages - glossy film can be very reflective, gets scratched quickly and really likes to collect fingerprints.

Matte film

As for this type of film, it is no less popular. Its main advantage is that it is able to absorb glare and hide fingerprints. But this is all her merit. Due to its unusual structure, image deterioration is often observed. But some people don’t notice this, which is why many choose this film option when they decide what is better - protective glass or protective film for a smartphone.

Mirror film

Unlike previous models, it does not often become a defender of displays. Its peculiarity is that it can reflect objects, i.e. turns the turned off screen into a mirror. But, like this accessory, it can also distort the image.

Safety glass

This screen protection option is considered more modern. It is obtained chemically from It is harder and thicker than conventional film, so it can provide protection not only from scratches and fingerprints, but also from impacts and even moisture. At the same time, the sensitivity, color and brightness of the display are maintained.

The thickness of the glass (0.25-0.50 mm) is explained by its multi-layer nature. Typically, the first layer is made of silicone to adhere tightly to the screen. Next comes the fastening layer, which prevents fragments from scattering in the event of a violation of the integrity of the glass. The third layer is anti-reflective, its task is to maintain the visibility of the image in bright light. A protective layer will save you from bumps, falls and other types of damage. And finally, which provides protection against moisture, fingerprints, and also makes the screen easier to clean.

Protective glass or film - which will protect the front of your smartphone better? It is still difficult to answer this question, but it is already clear that the film comes in several types, from which each owner of a touch screen will be able to choose the appropriate one. True, you will have to sacrifice something - either the brightness of the image, or a clean, “unstained” screen.

In this regard, it is easier with glass. There is nothing to choose here, because in structure they are approximately the same. Only the name and manufacturer differ. But they retain the brightness of the picture and, due to the oleophobic coating, hide fingerprints. For the same reason, safety glass is easy to clean, although it requires some care.

Is it worth caring?

Glass or film on the phone? Let's continue to figure it out. As already noted, the film is softer than glass, which means its service life is shorter. In case of any contact with hard “sharp-like” objects, it becomes covered with scratches and eventually becomes unusable. There is no point in prolonging her life; it is easier to buy a new accessory.

The situation with glass is different. First of all, it has a protective layer that should protect against accidental falls or impacts. There is also an oleophobic coating that repels dirt from the display. Just wipe with a cloth. But such a coating wears out over time, this is inevitable. True, if you care for it properly, it will last longer.

It's time to clean the glass

Before you start cleaning the glass, it is advisable to first check its integrity. To do this, you can pour a little water on its surface. And if it starts to form into drops, then everything is normal. If the liquid spreads, then the coating is damaged or absent altogether.

You should not clean glass with alcohol solutions or other cleaning agents, even if this is their main area of ​​application. They just contain certain compounds that can remove the grease-repellent coating. It is better to use water-based solutions, which must be applied to a cotton cloth and gently wipe the device screen.

However, you can correct the situation with the disappearance of the oleophobic layer. For such cases, special oleophobic coating kits are sold. The kit includes a soft substance and cloths for its application and distribution. Everything needs to be done quickly, as the product dries instantly. It is advisable to repeat the procedure the next day.

Film or glass for the screen? Now, when choosing between these accessories, it is necessary to take into account the fact that film protection does not require maintenance, but does not last long, and therefore must be replaced frequently.

Glass is a more durable accessory, but it can quickly lose its properties due to careless use. It needs to be looked after, which many mobile device owners may not agree to. True, for those who dare to do this, the glass will last for many years.

Preparation for gluing the film

Regardless of what is chosen - protective film or glass for the phone, each of the options will have to be “made friends” with the display. Therefore, it is necessary to know how this is done. And the film will be tested first.

It is worth noting that this procedure can be performed in different ways. Of course, only one will be considered, but this does not mean that other options will not be suitable.

Film or glass on an iPhone or any other mobile device is usually glued using special objects that simplify the process. In this case, you will need the following things: a plastic card, a microfiber cloth, display cleaning liquid and a lot of patience.

You should also take workplace preparation seriously. You should sit comfortably, preferably at a table, remove all unnecessary objects and be sure to wash your hands. This is a very important point. If you do the work “on your knees” and with dirty hands, it will not be easy to achieve positive results.

Difficulty in gluing film

You need to stick the film on a clean surface, so the next step is cleaning the display. It is necessary to carefully inspect the screen, it must be perfectly clean. After all, dust, specks, fingerprints and other types of contamination will eventually manifest themselves in the form of bubbles. A special cleaner for wiping LCD screens and the aforementioned microfiber cloth are suitable here. Just please, no alcohol. It can have a bad effect on the display itself.

Protective glass or film, it doesn’t matter, has a sticky surface with which they come into contact with the display. To prevent dirt from getting on them, the accessories are covered with special stickers. And the film is usually protected on both sides. Therefore, before sticking, you need to remove the first sticker, holding the film by the sides.

It is advisable to start gluing from the side where it will be more difficult to align. For example, this could be the location of the Home button, which many devices have. After this, you need to use a plastic card to move to the top of the smartphone. The main thing is that there is no air left under the film, as this will cause the surface to bubble.

Okay, let's say bubbles appear. This means that there are small specks left on the display. In this case, we collect the remaining patience, take the tape, peel off the film to the desired place and use adhesive tape to remove the cause of the bubbles. After that, we glue the accessory back in the same way.

Easy installation of protective glass

Protective glass or film? What is better - we continue to figure it out. So, the film is pasted, and now it’s time to install the glass. The beauty of this process is that it is non-irritating. There is no need to rub the display until it shines, removing the slightest particles from it, or tear off the accessory several times to remove bubbles. It will be enough to simply wipe the screen with a soft cloth, and you can begin installation.

Next, the glass is freed from the protective sticker and applied to the device display so that the holes for the speaker and the “Home” button are in their places. In this case, it is advisable to hold the glass by the sides, slightly bending the edges upward. It should be taken into account that the glass is up to 0.5 mm thick, due to which it may stand out a little from the background of the device’s body. Then you can correct the situation by rounding the edges using some small grinding tool. That's all. Protection is installed.

Summing up

Protective glass or film - which is better? It is quite difficult to determine the winner in this competition. There can be many opinions on this matter, and each of the contenders for the title “Best” will eventually gain many fans. Here you need to set your priorities correctly. Film is cheaper, varies in texture and can last for several months if used carefully. But it will not protect against serious damage, and it can be quite difficult to stick it on.

Glass, in turn, has an impact-resistant layer, a grease-repellent coating, can last a couple of years, and its installation leaves only a pleasant impression. But in appearance this accessory is not particularly different; its oleophobic coating requires proper care, and its price is much higher than the cost of the film. That seems to be it. It's time to choose what's right - a protective film or a protective glass for your smartphone.

Have you ever broken your smartphone's display? According to Motorola research, every second gadget owner would answer this question in the affirmative. Moreover, 23% of users continue to use their smartphones, despite the shards of a broken screen cutting their fingers. At the same time, 42% of smart phone owners refuse repairs due to the excessively high cost of replacing the display. And this is not justified, because in addition to the glass itself, the touchscreen panel, the matrix itself, and even the cable connecting the matrix and the touch-grid can also break.

How do phones most often break? 50% of smartphone owners complained about the device accidentally slipping out of their hands, 32% about it falling out of their pocket, and 27% about the gadget falling from their lap when standing up. And 5% even managed to break their smartphone by throwing it against the wall. Why are we talking about this? Moreover, despite the latest developments by engineers and the popularized hit new products of companies, there are no unbreakable displays.

Scary? Not at all, if you treat your gadget with care and know how to protect it. And one of these “safeties” is safety glass, which is popular today. They differ from the usual protective films in thickness, multi-layering, manufacturing materials and, most importantly, in the function of protecting the screen from cracks and chips. Of course, no one can guarantee a 100% protective effect when using protective glass, but still the likelihood of protecting the display with them increases significantly. Moreover, in addition to protection, they perform a number of useful functions. Just look at what layers this glass consists of.

1. Silicone base. Silicone allows the glass to stick almost tightly to the screen, so it won’t move to the side.
2. Containment layer. He starts working when the damage is severe enough to break through all the protective layers of the glued glass. Thanks to it, the glass of the smartphone display will not crumble, and the crack will not spread further.
3. Anti-glare layer. It is responsible for maintaining image clarity under bright sunlight or in a well-lit room.
4. Protective layer. This is the main defense that takes the entire blow. This layer is responsible for preventing scuffs, chips and scratches from appearing on the display.
5. Oleophobic layer. With it, the sticky stains of grease and moisture familiar to every display will not remain on the glass.

What are the differences between protective glasses for smartphones?

Smartphone model

Glass thickness

This is the first of two characteristics responsible for the reliability of protective glass. The thickness of most materials affects their strength - the same with glass: the thicker it is, the stronger it is. But do not forget that thick glass visually enlarges the smartphone and becomes inconvenient. Moreover, it has been noticed that some thick glasses lead to a decrease in the sensitivity of the sensor. Therefore, it is best to adhere to the “golden mean” in this matter. Modern glass comes in thicknesses from 0.15 to 1 mm. If you are not going to go mountaineering with a phone in your pocket, then it is better to choose a thickness from 0.28 to 0.5 mm.

Glass strength

The strength of glass is measured using the Mohs scale, which measures the surface's ability to resist scratches, cracks and chips. To create the gradation, ten natural minerals were used, which scratched each other and lined up in a Mohs line. But do not forget about the shape of the protective glass: it is thin and rectangular. In this regard, if a damaging surface hits the front part, the most durable glass will perform its function better, but if it falls on the end, only less durable and, therefore, more elastic glass will be able to absorb the impact. Therefore, it is best to choose the optimal middle option - 9H.

Type of coverage

In addition to protecting against damage, safety glass has other functions. There are several types of glass coatings: glossy, matte, oleophobic, ultra-transparent and private.

Glossy glass is a standard option and does not have any additional functions. This glass conveys the image most accurately, maintains the brightness of the backlight, and is almost invisible on a smartphone.

Frosted glass helps to cope with the bright light falling on the display - the picture does not fade and retains colors. This is especially true in bright sunlight or in a bright room. But the disadvantage of such glass was a slight distortion of the image.

Oleophobic coating is already a standard for most manufacturers today. Most often, its presence is not even indicated on the packaging. But still, not all models have it. And it is needed to prevent moisture and grease from getting on the glass.

Ultra-transparent glass speaks for itself: it is not visible on a smartphone.

Privacy glass will appeal to those who do not want others to see their smartphone screen. Its feature is the darkening of the screen at an oblique angle. That is, you can see the image only by holding the device directly in front of you. This option is perfect for those who often travel on the subway or view personal data.

Type of glass

To give glass aesthetic appeal, engineers have come up with several types of processing of sharp glass edges: 2D, 2.5D and 3D.

Sharp edges are removed from the edges of 2D glass without careful grinding of the edges, since they are recessed deep into the body or covered by a side edging. Thus, the user does not see the thickness of the glass: only the front surface of the coating is open to him.

Protecting a modern smartphone is something that interests many people. It is safe to say that any serious damage is a huge problem, since it can be accompanied by both loss of functionality (display areas with no image or sensor response) or complete failure of the screen. The leader in the market for protecting wearable devices from trouble is a protective glass for the phone, which guarantees the implementation of a whole range of measures designed to keep a mobile phone or smartphone in working condition. Today we will talk about how to choose a reliable protective glass for your smartphone.

Standard protection - a brief description of the techniques used

Although 99 point 99 percent of the time the screen of a wearable device is impacted there is no visible damage, over time even mild scratches or friction lead to negative consequences. Everyone is familiar with dull spots and cloudiness, especially those who prefer to carry their phone right in their pocket, next to their keys or change. Manufacturers also take this factor into account. Therefore, there are enough protective equipment on the market, some of which are immediately used at the manufacturing stage of wearable devices. A short list of these measures can be compiled as follows:

• protective covers made of silicone or with a transparent film in the screen area. This method has the most visible pros and cons. The advantage is that the device is completely protected, the beautiful appearance of both the screen and the body as a whole is preserved. Disadvantage: lack of proper cooling mode, loose fit, as a result of which dust and small debris often get clogged inside;
• protective film. This method has more interesting advantages compared to a cover. For example, a perfect fit to the surface of the screen. However, the case remains unprotected, in addition, visiting any forum, you can hear reviews that without proper skill, it is very difficult to apply the film without the formation of air bubbles under it. In addition, this kind of coating is not resistant to sudden mechanical impacts; rather, it is intended to prevent abrasion;
• factory coating. Some manufacturers immediately apply the film to the surface of the screen. This is done thermally; the coating itself is characterized by increased strength, but its replacement is not provided. If the device is not subject to constant light mechanical stress in the screen area, such protection may look like an inexpensive but good option. But - there is always a danger of damage to the factory coating, in which case you will have to glue an additional layer of film, which already looks completely ridiculous both from a technical and user point of view;
• protective glass for phone, high strength material. This most modern type of smartphone protection looks like the best option in all respects.

The last of these ways to keep the screen intact deserves separate consideration, as it offers many unique advantages for the end user and, in addition, represents a measure of mechanical protection for the wearable device as a whole.

What is it made of

To know exactly how to choose a protective glass for your phone and not be disappointed when purchasing it, it is useful to dwell on what such a coating is made of. In reality, it is a complex multilayer material. As the name suggests, the main part of the product is high-strength tempered glass. The entire package structure consists of several layers:

• silicone adhesive base designed for fixation and tight fit to the surface of the screen;
• a very thin adhesive film that serves to prevent small debris from chipping away in the event of damage to the protective layer;
• tempered glass of different composition and strength;
• a light diffusion layer that reduces the so-called secondary glare formed when light passes through the protective glass for the phone and is reflected from the smartphone screen. The main advice for choosing a reliable protective glass for your phone is to choose the desired surface, or rather, the properties of another layer of coating. It can be either matte, which will be interesting for those who often use their mobile device in the sun, or completely transparent, which guarantees the least possible image distortion.

The structure of the package is completed by a special coating that repels fat. This ensures the absence of fingerprints, improves usability and preserves the appearance of the display. When deciding which option to choose, you should consider your own preferences. This is the advice for choosing a reliable protective glass for your phone, since other characteristics depend on the thickness of the main layer of material and the degree of its strength.

How does this work

Choosing a good glass screen protector for your phone can literally save your life. It works like this:

• When there are any impacts on the surface of the screen, the protective glass for the phone is the first to take the load;
• due to its rigidity, the layer weakens the impact and does not allow the impulse to transfer to the main display;
• The high strength of the protective glass for your phone ensures that no marks will remain on the surface.

With a critical impact force, for example, with an object with a sharp protrusion, destruction occurs. The protective glass for the phone will simply break, and part of the force will be transferred to the main display. But at the same time, its intensity will greatly decrease, which will allow the mobile device to withstand such an impact without damage. Another function that a protective glass for a phone performs and that is rarely talked about is protection from impacts aimed at the end of the mobile phone. It works like this:

• if the device falls to the floor, for example, at an angle, the force of the impact leads to deformation of the case;
• A properly glued protective glass for a phone takes on the load that occurs when the geometry of the mobile phone changes. In some cases, it directly, in simple words, runs into an obstacle;
• With such an impact, the protective glass for the phone always breaks, however, this reduces the degree of deformation of the mobile phone body, which is guaranteed to protect both the display and the electronic part from critical damage.

Don't think that choosing a good protective glass for your phone will allow you to throw it face down into concrete without incident. Naturally, nothing will protect you from such an impact, however, in some cases, a “fuse” glued to the surface of the screen can save your mobile phone.

What does the market offer?

Today, many manufacturers offer their own options. The protective coating is available in different thicknesses, with a matte or glossy surface, and the manufacturer declares certain characteristics of the product. However, there are a few things you should definitely know to understand how to choose a protective glass for your phone that will ensure the dispersion of fairly serious impacts, and at the same time its price-quality ratio will be acceptable to your wallet.

The choice of a good protective glass for your phone depends on several characteristics of the proposed model:

• thickness of the main layer of material;
• basic strength, which characterizes the composition of the glass used.

It’s worth noting right away that many manufacturers are trying to increase their rating in the eyes of consumers by declaring, or physically ensuring, extremely high levels of coating hardness. The advice for choosing a reliable protective glass for your phone is as follows: try to choose a model with a strength level that is not much different from the basic one, which is 9H.

This characteristic is considered optimal because it provides the best balance that characterizes a reliable product:

• The protective glass for the phone is flexible enough to guarantee some freedom of deformation without breaking, which is good for absorbing frontal impacts;
• The fragility of the coating is not sufficient for a blow to the end to lead to immediate destruction of the coating.

In fact, a high-strength phone screen protector becomes incredibly finicky. It works great when it comes to light impact or even strong blows “to the front”. However, it is extremely fragile and literally crumbles from side impacts, which the protective glass for a phone with a base rating of 9H endures without the slightest harm.

How to apply the coating

When buying a ready-made product in a store to protect your mobile phone, it is useful to immediately know a few details on how to choose a protective glass for your phone and apply it to the device without the slightest trouble. The product on the market has several key characteristics:

• Protective glass for a phone is always designed for a specific model from an individual manufacturer or for an entire series, if the manufacturer has provided for the use of identical locations for the microphone, speaker and other components that require holes in the surface of the protective layer. Technically, it is not possible to cut, “break and sand” or otherwise change the size or configuration of a phone screen protector;
• basic strength, the importance of which is described above in the article;
• thickness, which is responsible for the final protection indicator. You can buy a suitable option by simply thinking about how extreme conditions the phone may be in;
• characteristics of the external coating - matte or glossy layer.

Once a suitable and reliable option has been selected, the protective glass for the phone is simply glued to the surface of the display.

Let's sum it up

After buying the phone I immediately installed the glass:

You can read a review of such glass from our colleague:

Why did I have to change this glass?
It fulfilled its protective function - it saved my smart screen from at least chips/scratches - and at most from replacing cracked glass.
The result of the phone falling on the asphalt:
The main blow fell on the corner:


And a screen on stones in rough asphalt (initially there were chips, then they grew into cracks across the entire surface):


As you can see, the side on the phone was also damaged, but... Replacing it without replacing the base of the case is not possible, so I decided to leave it as is.
Photo of the old glass removed:

The photos are crooked, but this is the best I could do to show the extent of the damage to the old glass.

Now directly about buying new glass:
I liked the glass from Brando, but its price at the moment seemed too high to me, when there are analogues that are not much different from it and cost much less.
After looking at the reviews, I chose glass from Nillkin - Amazing H+.
There are also Amazing H glasses, they are cheaper, but have a “sharp” edge. In H+ the edge is rounded. There is less discomfort when pressing the on-screen button, which, if there is glass, is slightly recessed.

The parcel was sent quite quickly, the time from purchase to receipt of the parcel was 16 days (China - St. Petersburg). A gray postal bag, the box was wrapped in bubble wrap.
Despite the sufficient safety margin of the packaging, the outer part moved slightly and was jammed. This did not affect the internal part:

Inside were:
1) Packed glass
2) Installation kit (Instructions, napkins, cloth, stickers for removing debris from the screen, antistatic sticker)
3) 2 protective stickers for the camera


Installation kit:

Installation is standard for glass:
1) Cleaned the screen with wipes 1 (wet), 2 (dry);
2) Covered with antistatic film;
3) Pasted the glass (after peeling off the protective film);
4) Wipe with a cloth;
5) Optional - glued a piece of glass onto the camera (the material feels like glass, only thinner).

When I removed the old glass from the screen, I thought that the corner of the original glass was still damaged, but it turned out that it was not, the protective glass absorbed the blow and saved the main one.

As you can see in the photo above, the glass is perfect for this phone model. Also, if you look closely, you can see the main difference between H and H+ glass (you can see the rounded edges of the glass).
A little advice for installing glass: use latex gloves when installing. This eliminates the risk of fingerprints appearing on the reverse side.

Results:
Pros:
1) The glass is made of high quality, I did not notice any flaws;
2) Good oleophobic coating (apparently the previous glass has already worn off a little, the difference is felt for the better);
3) A strong box; in order to damage the glass in the packaging you need to try very hard;
4) There is a sticker on the camera, Brando did not have one;
5) Not very thick, more than Brando, but I got used to it quickly, no additional ones are needed. stickers on the screen button.

Cons:
1) They usually write that they are small napkins, but these were enough for me, so +-;
2) It’s a little unusual that the glass near the speaker is not symmetrical, but I got used to it pretty quickly;
3) It’s not clear which side to stick on the sticker on the camera - I didn’t stick it correctly the first time.