• The sensor on the iPhone does not work: reasons, diagnostics, repair. The sensor does not work on the iPhone: what to do? iPhone PCB failure

    Despite the convenience, reliability, quality and simplicity of Apple gadgets, they also have their weaknesses. One of them is the screen (touchscreen).

    The essence of the iPhone sensor malfunction

    For example, you want to launch the AppStore application, but the iPhone does not respond to pressing and does not launch this application, while other applications launch and work normally. Or none of the applications are controlled, it is even impossible to launch it. The causes of the incident are different - from software to physical (technical).

    Types of iPhone screen malfunction:

    • response to pressing with a delay (“freezing” of the sensor);
    • the screen does not respond to any press;
    • there are “dead” spots and areas of the gadget screen that do not respond to any touch and are located in any sequence;
    • The sensor triggers spontaneously: with one click, two or more characters entered from the iOS display keyboard are displayed; pages of websites and e-books downloaded to the device spontaneously scroll back and forth; random (random) switching between running applications, etc.

    It doesn’t matter what the model, brand of the device is, or even the operating system installed on it - everything depends on the technology for manufacturing mobile device screens with capacitive touchscreens. Whether it is an iPhone or a Samsung Galaxy S7 based on Android - if the screen itself is to blame, the approach to troubleshooting is the same for all gadgets with a capacitive sensor.

    Depending on what the sensor malfunction is, the cause of its malfunction is found.

    Technical reasons for iPhone sensor failure

    The iPhone screen is a multi-layered component that includes:

    • external glass - protection of the display and touchscreen;
    • touchscreen - command and data input device;
    • display - graphics output device.

    All elements are arranged layer by layer in exactly this sequence. There is a thermal film under the screen.

    Broken screen components

    Regardless of what breaks - the glass, the touchscreen or the display itself is cracked - this entire unit must be replaced, because it is a non-repairable unit. It is impossible to dismember, separate these components and replace each one separately - if any of you found a discarded, broken smartphone and tried to disassemble the screen, you will understand what we are talking about. In this case, the touchscreen does not work - either its individual elements are damaged, or the composite screen controller, which includes an element of its microassembly or microchip that processes clicks on the screen, does not work. Certain areas of the screen may react worse and worse to your touch over the years - you have a habit of hitting the keys or touchscreen too hard, change your behavior. In all cases, contact your nearest service center.

    iPhone PCB failure

    Despite the fact that the printed circuit board (motherboard) of the iPhone is protected much more reliably than the sensor, because it is located under it, it is damaged only by the gadget falling from the 17th floor, a strong blow to the device, getting wet in the pool, or being hit by a car or train etc. In this case, it must be replaced - and this replacement is the most expensive for an iPhone. Some people refuse to repair their iPhone and buy themselves an inexpensive Android smartphone or tablet. The main board of the gadget is replaced at an Apple service center.

    Break, bend, oxidation of screen cable tracks

    This happens very rarely, because the insides of the iPhone, including the cable, are rigidly fixed and immobilized. Modern cables are maximally protected from moisture. If the reason for the inoperability of not only the touchscreen, but also the display itself is still a cable, diagnostics in the Apple iStore will reveal this. Often the cause of “dead” zones on the touchscreen is damage to some of the cable tracks.

    Manufacturing defect

    Such a malfunction is detected very quickly - in a matter of days. For example, this could be screen delamination - partial or complete peeling of the touchscreen from the display. You have the opportunity to either exchange the device or give your iPhone to a free service under warranty.

    Software glitches on the iPhone touchscreen

    The culprit for fuzzy, unstable operation may be the iOS operating system itself and its applications. First, restart your gadget.

    If the response to clicks “freezes” and commands from the touchscreen are processed unstable, then the causes of the problem are as follows:

    • a large number of simultaneously running iOS applications;
    • the gadget does not “pull” the latest version of the iOS system to which you recently updated, the performance is not enough - you need to “roll back” to the previous version if it is still signed by the Apple activation server;
    • “clogged” with applications and your files of the device’s internal memory;
    • errors and shortcomings of the developers of a particular application (beta version, instability of the application version due to discovered errors);
    • iPhone RAM overload - quickly clearing RAM is done by successively holding down the Power and Home buttons for several seconds.

    Let's especially say about the latest versions of iOS. Remember the incident with old Apple Mac computers? On them, earlier versions of MacOS, up to OS X Yosemite, worked quickly, the MacOS El Capitan version froze, but the MacOS Sierra version was severely slow - working on such a PC turned into a living hell. There were freezes when typing on the keyboard, and the mouse pointer on the screen moved jerkily. Therefore, Apple, taking into account its bitter experience, has officially stopped supporting the iPhone since August 2016, up to the 4S model - it will no longer be possible to install iOS 10.x. The latest versions of iOS - 9.3.x - are already "freezing" on the iPhone 4s, but it is impossible to "roll back" to earlier versions - hackers have not yet cracked the signing by the Apple server of the firmware version to which you want to "roll back". Moreover, if you managed to install iOS 10.2 on the iPhone 4s by “dishonest” means, it would constantly freeze, the sensor would not obey your fingers, and you would get the misleading impression that the touchscreen was “killed.”

    Other reasons why the touchscreen on an iPhone doesn’t work and how to fix them

    Sometimes the sensor becomes “stupid” because of the case or bumper - a plastic frame for the iPhone that prevents the metal frame from quickly overcooling, through which the cold easily reaches the battery. Remove the case or bumper and try again the commands and manipulations on the iPhone sensor that did not work.

    The case may be causing screen problems

    And finally, a non-trivial method is to replace the faulty touchscreen with a real wireless keyboard with a touchpad and mouse. This method is good if the iPad screen is broken, in which the display and outer glass have survived - and you don’t want to throw out several thousand rubles to replace a faulty sensor; instead, you take a Bluetooth keyboard and mouse, and the iPad becomes something like a MacBook ultrabook, only with a detachable keyboard and running iOS, not MacOS. But on the iPhone this is a perversion, the smartphone screen is very small - you still need to replace the screen or switch to a cheap iPhone analogue.

    Keyboard

    How to avoid sensor problems in the future

    These tips will help you reduce the risk of sudden sensor failure.


    Video: how to replace a faulty screen on iPhone 5x gadgets

    Self-diagnosis and handing over the iPhone for repair

    Self-diagnosis of sensor malfunction on any gadget, including the latest iPhone models, is more of a task for the brain. Correctly assessing the faulty state of an Apple mobile device, you can significantly speed up diagnostics in the service center and even try to save a small amount on its payment, but that’s all. Entrust the replacement of faulty components and blocks, including the iPhone screen, to specialists - Apple equipment has proprietary levels of protection against amateur activity and, without knowing them firmly, you will simply lose the device. It is recommended to contact service centers that have many years of experience in repairing Apple equipment, for example, the iStore service center.

    Even an ordinary user can assess the problem when there is a problem with the iPhone sensor. Even if the screen itself breaks down, there is nothing to worry about. We wish your iPhone to serve you faithfully for 10 years or more!

    Apple monitors the quality of the parts from which its devices are assembled. Almost every element is improved in the new generation of devices, but no one is immune from defects or problems arising during operation. One of the most common problems with iPhone and iPad is sensor failure. The touchscreen may fail completely or partially, not responding to user touches across the entire surface of the screen or only in a certain area. If the sensor on your iPhone or iPad does not work, you should not immediately take the device to a service center; you can often solve the problem yourself.

    Signs of a faulty iPhone sensor

    In iPhone and iPad, the display module consists of three components: protective glass, display and sensor (touchscreen). Sensor malfunctions are manifested by the following symptoms:


    The symptoms described above may be present constantly or may appear for a while, after which the iPhone will start working normally again.

    You cannot use a touch device with a faulty touchscreen, and you must fix the problem as soon as it occurs. However, it is not always caused by incorrect operation of the sensor; in some cases, errors in touch processing occur at the software level.

    What to do if the sensor on your iPhone is not working properly

    If a problem with touch processing is caused by a software glitch, then the device user can fix it independently, without the help of specialists. To do this, you need to perform a “hard reboot” of the device by holding down the “Home” and “Turn off/on” buttons simultaneously. After 15-20 seconds, the smartphone screen will go dark, after which the Apple icon will light up - this means that the reboot was successful. After the iPhone boots up, you can test it for sensor performance.

    In addition, if the sensor on your iPhone is not working well, you should make sure that the problem is not related to the case (or bumper) of the device. Often spontaneous clicks on the sensor are associated with improperly applied film to the screen. If there are errors in the operation of the touchscreen, it is better to remove all protective accessories and see how the sensor responds to touch without them.

    iPhone sensor calibration

    Apple does not provide a way for users to calibrate the iPhone or iPad sensor. There are no tools in the device settings that would be responsible for calibration, and only service center specialists can perform it, as stated in the official documentation for Apple smartphones and tablets.

    At the same time, some touchscreen settings are provided in the iPhone, but they only apply to models older than the iPhone 6S and iPhone 6S Plus. We are talking about adjusting the sensitivity of the 3D Touch function. To adjust the pressure to perform various actions when using 3D Touch, do the following:


    How to replace the touchscreen on iPhone

    Replacing the sensor on an iPhone or iPad is a complex procedure that requires special skills, tools, and a spare part. In most cases, attempts to independently replace the touchscreen on a smartphone lead to damage to other components of the device, cracks/scratches on the case, and other problems. That is why it is better to trust iPhone repairs to specialists from trusted service centers.

    It is important to choose the right service center to replace the touchscreen, after reading reviews on the Internet. When contacting an unverified service, there is a high risk that a low-quality replacement sensor will be installed in your smartphone, which will quickly fail. Verified services provide a guarantee on the work performed to replace the touchscreen, which can be useful if the sensor starts to malfunction again.

    Nowadays, with all models of modern phones, many breakdowns can occur, caused not only by software errors, but also by a large number of mechanical damage, such as chips, scratches and dents caused by dropping the phone. Even after hitting a hard surface, the iPhone may turn off and not turn on again or function intermittently. At this moment, its body may burst or get cracks throughout the glass, and it is also possible that it stops working.

    Of course, in Moscow the most common type of repair, many people go to a service center as a result of the fact that their favorite gadget has suffered a mechanical breakdown or.

    The result of a fall or the result of a strong blow tells us that the smartphone will begin to behave unstably, periodically turning off. The touchscreen located under the glass will stop working, and the display glass may become cracked. And this can happen in such a way that instead of a clean and smooth screen glass, you get a pattern in the form of small, sharp fragments.

    The latter is the most likely option in case of strong collisions with asphalt or concrete. And in this case, the intervention of a mobile equipment repair specialist is necessary! On the Internet you can find many instructions for self-repair, provided that you have an idea for repairs at home - for example, replacing the back cover or display of an iPhone, but unfortunately this can lead to additional damage. Because without the skills and special tools, you greatly limit yourself in your actions and spend more time on repairs. And the worst result may be additional payment for yet another problem.

    The specialists of our technical center will advise you on many issues to bring your beloved iPhone back to life, highlight the difference in prices for parts, offer the most suitable repair options, and only after your consent, will they begin their work. Upon completion of the repair, a 90-day warranty will be issued and a coupon with a 15% discount on subsequent repairs will be offered.

    Owners of Apple products such as iPhone 4s very often encounter sensor failure. It is difficult to use a gadget with such a malfunction, so it is necessary to fix everything as quickly as possible.

    Why might the sensor in iPhone 4s break?

    There are several reasons for the touchscreen failure on iPhone 4s:

    • Mechanical damage caused by a fall or impact.
    • Software failure and system board malfunctions.
    • Excessive pressure.
    • Incorrectly selected protective cover.

    Therefore, do not let your iPhone 4s fall and scratches appear on its screen. Another precautionary measure here is the use of a special film.

    What to do if the sensor in iPhone 4s fails?

    If the sensor breaks down, there is only one way out - install a new screen. It is very problematic to fix such a breakdown on your own. This requires special tools. It is also important to properly disassemble and reassemble the gadget. For the iPhone to work correctly, you will need to connect the cables correctly. Not every person can do this. If any cable is installed incorrectly, more expensive repairs will most likely be required.

    Also keep in mind that you cannot disassemble an iPhone that is under warranty. Therefore, there is only one way out - go to the service center.

    Who can help?

    It's better to call us. There are many reasons for this. The solution to this problem with us will cost you only 2000 rubles. We not only carry out all work at a very high level and in the shortest possible time, but also provide a long-term guarantee for all services provided. And you will not be at risk of repeated breakdowns after repairs carried out by our craftsmen. After all, each of our specialists knows a lot about repairing iPhone 4s.

    Call us and solve any problem related to iPhone 4s easily and quickly!

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