The light sensor of the iPhone 4 does not work. What to do if the proximity sensor on the iPhone does not work

Apple firmly holds the bar of superiority among its competitors. The market is oversaturated with similar smartphones and each manufacturer is interested in championship. Gadgets Apple They are considered not only fashionable, but also reliable. Strict quality control, strict adherence to technology and much more ensure the durability of the devices. iPhone Features allow them to be used for several years. But over time they wear out too. “Temporary breakdowns” are of various types and depend on specific reasons. Long-term use sooner or later leads to device failure. One of the first things to fail is the sensitivity of the display. On top panel The device contains a sensitive element responsible for this function.

Most likely, you have noticed that when you approach the device to your ear during a call, the screen goes out, and when the call is over, it lights up again. This happens in order to save battery, since the matrix is considered one of the main consumers of energy. Therefore, and in order not to inadvertently affect the flow of the call, the iPhone's proximity sensor is temporarily turned off.
Sometimes the iPhone 4, iPhone 4s sensor does not work and then the iPhone sensor does not turn on after the end of the telephone conversation. Or vice versa, a constantly working screen consumes a large number of charge and becomes vulnerable to touch.

There are several reasons why the sensor on the iPhone does not work.

1 Mechanical failure. The window itself is located on the front panel of the device. Physical impact it may damage the sensor. Sometimes, when independent decision Problems: the cable cannot be completely cleaned. Then the entire set of parts is replaced. 2 Dust. Damage to the seal of the device may cause dust to enter the device. This, in turn, causes the device to malfunction and leads to serious damage. 3 Software failure. This kind of problem can be easily solved by reflashing the device. Most often, problems occur due to the breakdown of the upper cable; the software itself breaks down less often.

These are the same reasons when the iPhone 5 does not respond to proximity and the sensor on the iPhone 5s malfunctions.

The proximity sensor does not work on the iPhone 6 - the reason is a broken cable

This is the main reason for this type of breakdown. If you have the appropriate tools, you can break the cable yourself. To do this you need to do the following:

1 Carefully disassemble the device and remove the battery. 2 Then you need to carefully remove the speaker and the connector securing the headset. 3 Next disassemble Home key, by unscrewing the fixing screws.

4 Carefully pull out using ordinary tweezers.

5 If the parts in contact with the cable are not affected by corrosion, try to clean it. When the elements of all neighboring parts of the loop are affected, it changes completely. 6 Install all parts in reverse order. All parts are screwed in as they were originally. 7 Check the operation of the sensor.

The mechanism of the cable components is fragile and can be easily damaged by careless actions. All work at self-replacement and cleaning of parts must be done as carefully as possible. You need to know that the breakdown may have to be corrected by replacing the sensor or board. But you won’t be able to determine the extent of this malfunction on your own. Where to turn if the iPhone screen constantly goes dark?
If the device continues to go out when checking the settings, it is better to contact service center. Also, if you are unsure of the correct independent replacement of parts and lack of the necessary tool, you should contact specialists.

Features of solving problems with the proximity sensor

If you independently repair the sensor and replace parts, you may encounter the problem of low-quality parts. That is, the so-called analogues of manufactured components may not meet quality requirements and this will lead to poor iPhone repair.
Chinese parts sometimes cause devices to malfunction. In native display modules, the sensor window allows a fixed amount of light to pass through. In fakes, the color of this window is lighter or darker. Then the device does not work correctly.

Sometimes the issue is calibration of the sensor application and to solve it you need to perform a few simple steps.

There are many tips and recommendations on the Internet to solve this problem, but iPhone owners need to remember the risks associated with self-diagnosis and replacement of parts Sometimes the reason lies in motherboard or glass tinting. Then you will not be able to solve the problem on your own.
Remember that the warranty iPhone deadline equal to two years, and not one year, as some inattentive users believe. While the device is under warranty there is nothing to worry about. At the service center, under warranty, they will bring you to correct work naughty sensor.

Gadgets from the American company Apple are considered not only the most advanced and stylish, but also the most reliable. The most thorough quality control, strict adherence the latest technologies

, the use of high-quality parts and materials - all this contributes to the fact that the smartphone will serve its owner for many years.

However, even such advanced devices have their own resource, after which problems may arise.

One of them is that the iPhone screen goes blank for no apparent reason. Reasons why the proximity sensor does not work on iPhone Surely at

incoming call Have you ever noticed that when you bring your smartphone to your ear, the screen on it goes off automatically, turning on after the end of the dialogue. This is done in order to reduce the load on the battery (the matrix backlight is one of the main consumers of energy), and also to prevent the call from being reset by accidental pressing. If the iPhone's proximity sensor does not work, no shutdowns occur automatically, and energy begins to be consumed with

enormous speed . It also happens that after finishing a call, you cannot end the call because the screen does not turn on. If it doesn't work

iPhone sensor
4, there may be several reasons for this: Mechanical damage. This element is located on top of the front panel, next to the microphone and camera. Therefore, any load placed on this area can cause damage. Corrosion. Most dangerous enemy
. Sometimes it's not enough to spend
complete removal traces of corrosion from the cable to repair the device - you have to completely change the part. Dust. Initially, the device body is characterized by maximum tightness. Various loads can damage its integrity. In such a situation, the entry of harmful dust will lead to damage to the internal device.

Software problems. This problem can be solved as quickly as possible - by simply reflashing the device. But malfunctions

If the iPhone's proximity sensor does not work, then in most cases a damaged cable is to blame. If you have the appropriate experience and tools, you can try to replace it yourself.

To do this, the following manipulations are performed.

Carefully disassemble the body of the device and remove the battery.
Using tweezers, carefully remove the speaker and the connector that secures the headset. The screws holding the Home key are unscrewed.
Carefully pull out the cable with tweezers, which is why the iPhone 4 sensor does not work
If there are traces of oxide on the cable, but there are no traces of them on neighboring parts, you can try to clean the cable, and then check its performance. If the iPhone turns off badly, you will have to install new part.
The cable is placed in its original place, all parts and screws are mounted and tightened in the reverse order.

Needless to say, the slightest flaw in performing this work can lead to accidental damage, after which repairing the gadget will either cost more and take more time, or it will be completely impossible to carry out. Moreover, you will not be able to determine the cause of the failure on your own: it is quite possible that the board or the sensor itself needs to be replaced.

If, after checking the phone settings, the iPhone goes out, then it is better to seek professional help from a service center. You should do the same if you doubt that you can cope with the repair, are afraid of damaging the equipment, or do not have the necessary tools.

Our service center employs experienced specialists who are ready to restore the sensor’s functionality in the shortest possible time. short time. It is worth noting that replacing the top cable of an iPhone 5 or any other model will take a little more than half an hour, after which a fully functional gadget will be returned to you. Repairs are carried out using certified parts using the manufacturer’s proprietary technologies, which guarantees its quality.

Why doesn't the proximity sensor work on iPhone (4, 5, 6, 7, 8, X and SE), what should I do? I assume you have heard about the proximity sensor and know why it is needed. However, for those who do not know what we are talking about, we will very quickly tell you what it is. Proximity sensor

For what? It blocks accidental and involuntary presses, for example, when making a call, holding the phone to your ear, you will not be able to take out a loan, sell a car or call the Ministry of Emergency Situations. Useful feature don't you think so? In addition, during long calls it helps to save battery by putting the screen into sleep mode. So why doesn't the proximity sensor work on iPhone 5, 6, 7, 8, X?

Determining the cause of a malfunction without preliminary testing is quite problematic. After all, the problem may be a software malfunction or physical damage. We will list the most common causes of the malfunction.

Malfunction of the replaced one iPhone screen– as a rule, this problem occurs when the screen is broken and replaced incorrectly. Let's imagine a situation: you dropped your iPhone, it was without protective glass and its screen was very cracked. You have a desire to replace it, but after learning how much it costs to replace it at Apple and how long it will take, you give up this idea and decide to replace it yourself.

And here, you may encounter two problems that you most likely won’t even know about. First, you can buy a cheap, low-quality screen that doesn't support half the functionality of the original iPhone screen. And second, you may not connect it correctly.

Physical damage is a fairly common problem. Try to remember how long ago the proximity sensor stopped working, whether you dropped your iPhone at that time or exposed it to moisture. If yes, then most likely this is the reason. The only way out of this situation is repair from Apple.

checking iphone proximity sensor

Buying a broken smartphone – Apple is one of largest companies in a world with a huge number of buyers, it becomes a responsibility to produce quality goods. However, this does not mean the absence of marriage. In any production, people are responsible for quality control, and they tend to make mistakes. If you receive a defective iPhone, contact an Apple service center as soon as possible.

Software malfunction - sometimes the problem may be a bug iOS update or incorrect installation any application. Solving this problem is quite easy, but you risk losing all the files on your smartphone.

How to fix proximity sensor problems on iPhone?

Remove the case and protective glass

This is perhaps the simplest, but often not very effective method. However, try removing the case and protective glass smartphone and test if the problem persists.

Reboot your smartphone

No matter how absurd it may sound, but the usual reboot iPhone helps eliminate half of the problems. In order to restart your iPhone, you need to:

Hold the power button for a few seconds until the “Power Off” slider appears.
Move the slider to the right and wait 2-3 minutes.
Press the power button until the Apple logo appears on the screen.

Hard Reset

iOS update

Updating the operating system can fix many problems. including the iPhone's proximity sensor not working. With each new update, previous bugs are fixed and performance improves. Sometimes the design is updated and new features are added. In order to update iOS, you need:

Reset

If none of the above methods work, you can reset all settings on your iPhone. This usually fixes iPhone 5, 6, 7 proximity sensor glitches.

In order to do this, you need:

Open "Settings".
Tap "Basic".
Select the “Reset” → “Reset all settings” function. After entering the password, click "Reset all settings" to complete the process.

Reset all data and settings

This method will not only erase all settings, but also all data, including apps, photos, videos, etc. Before you begin, create backup copy data. In order to make a reset, you need:

Open "Settings".
Tap "Basic".
Select the “Reset” → “Reset content and settings” function. Enter your password and then confirm your actions.

iPhone recovery

iPhone proximity sensor not working after update? You may ask what is the difference between this and previous step. After all, both methods erase data and reset all settings. In fact, the difference is not great, but it is there. The recovery process will also format and reinstall the OS.

Connect iPhone to Mac/PC with using usb cable.
Make sure you have installed latest version iTunes.
Open iTunes.
In the summary tab, click the "Restore" button.
Then all that remains is to wait for the procedure to complete.

You can restore using the program. Errors occurred during recovery, list and their correction.

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According to Apple's designers, when you bring the iPhone to your face after accepting a call, the proximity sensor should be triggered, temporarily turning off and blocking the multi-touch screen.

Thus, this sensor allows you to solve two problems at once: reduce power consumption and provide protection against involuntary call reset (for example, when pressing your cheek). At the end of the conversation, the screen backlight should turn on and the touchscreen should unlock.

As a result, if your iPhone's proximity sensor is not working, all of these conditions are not met. The energy that is spent on providing a constant backlight to the screen is consumed faster. Another situation is indicative: the display turns off during a conversation, but does not turn back on after the conversation ends. In this case, you will not be able to end the conversation yourself - you will have to agree in advance with the interlocutor to hang up the call.

Why could the proximity sensor fail? What measures will the master take in each case? Let's talk about this in more detail.

Physical effects

The proximity sensor (or rather, its cable) is located in the upper part of the front panel - next to the front camera. Accordingly, every blow from a smartphone that lands in this area can threaten the part’s failure. Minor iPhone repairs will not be limited here - only help complete replacement iPhone proximity sensor.

Electrochemical corrosion

This problem presents greatest danger, since it can result in multiple damage to the hardware environment. Most often, moisture reaches the contacts of the sensor cable, bypassing the speaker grid or audio input. Often, along with the cable, the LCD display also fails (both components are located close to each other). Removing corrosion on the cable will most likely not yield results. The rotten part, like all other damaged components, must be replaced.

Dust, poor quality assembly

Under normal conditions, the sensor and its cable rarely become clogged - Apple took care of the sealing of the case. It's another matter if the communicator has already been repaired. If the screen module is not assembled correctly, dust may get into the gap between it and the body. From there it gets to the contacts of the sensor, and its sensory capabilities will sharply deteriorate.

Low-quality spare parts

In original display modules, the peephole for the proximity sensor allows a certain amount of light to pass through; in Chinese glasses, this peephole may be lighter or darker (you can’t see it by eye), as a result, the sensor stops working or does not work correctly. The second reason is the cable itself with the proximity sensor.

Software problems, defects

Failures in the operation of the proximity sensor may be due to vulnerabilities in the current software version. In this case, you need to update or restore the firmware. In addition, there are known cases with the delivery of individual batches of smartphones in which malfunctions of the touch cable were observed. In particular, this problem has affected some iPhone owners 4.

Estimated time for replacing a cable with a proximity sensor is 30 minutes. During this time, the technician will disassemble the iPhone and replace the cable.

All prices indicated include the cost of labor and spare parts.

What to do if the proximity sensor on your iPhone doesn't work?

The proximity sensor in the iPhone is one of the main elements of the phone. It is needed for:

adjusting the display backlight during calls;
to dial a number;
to enable voice service"Siri";

Accordingly, users cannot use all of the above functions if the proximity sensor on the IPhone does not work. The constantly backlit screen during a call is a particular inconvenience. Due to a non-working sensor, buttons and icons are pressed, which can interrupt the call.

Causes of malfunction

A non-working sensor may be due to:

mechanical damage (due to a fall or impact of the iPhone);
train wear;
Excessive amounts of dust getting on the sensor;
moisture getting into the phone case. In this case, you should disassemble the phone and dry all the display components separately;
Problems after firmware update.

Note! In some cases, the inactivity of the sensor may occur due to the cover that covers it. A poor-quality protective glass may also interfere with the proximity sensor's operation.

Firmware rollback

Often a problem with the sensor appears after installing updates. Developers do not always have time to fix all the bugs. If you don't want to wait new version firmware with the solution, you can roll back the OS to the previous version. Follow the instructions to return previous version OS:

connect your device to your PC and open the iTunes application;

Clamp Shift key on personal computer and at the same time click on “Restore iPhone”. IN operating system OS X you need to hold down the Alt button;

Select the most recent backup. Wait until the components are installed. It will take no more than 40 minutes.

The sensor stopped working after replacing the display - solution

If you changed the iPhone screen and after that the proximity sensor stopped working, this indicates that the position of its frame was violated. As a result, the sensor cannot perform its function. You can correct the position of the element yourself. Disassemble the phone (use only tools designed for iPhone - picks, pentagonal screwdriver, suction cup, Phillips screwdriver, spudger). Unpin back cover device, first disconnecting all motherboard cables.

Find the proximity sensor holder:

Remove the sensor frame and reinstall it. Remember, the element must be located exactly in the frame of the case.

Right installed frame shown in the figure:

Replacing a cable in an iPhone

Thanks to the instructions described below, you can replace a non-working sensor yourself. Before purchasing a new cable, pay attention to its markings. The original product contains digital and character codes, QR codes and inscriptions of the manufacturer’s company with the corresponding symbols. A genuine iPhone cable looks like this:

As a rule, a breakdown can only be corrected by replacing the cable part. It contains a mechanism front camera phone and proximity sensor. Detach the back cover from display module iPhone and start replacing the part.

Place the module on a flat surface and unscrew the screws shown in the figure:

Remove the top speaker cover and then the speaker itself.

Using a spudger, disconnect the front camera and proximity sensor cables.

Using tweezers, carefully remove the sensor (painted in purple tint) from the cable and replace it with a new part. You can also replace the entire cable.

Any instructions for self-repair You can find your iPhone on our website, or call a specialist for to any place convenient for you.