The sensor does not work on Meizu phones: causes and troubleshooting

Information is current! The page was updated on December 16, 2019

Meizu phones are manufactured in China and belong to the budget category, which is why users often encounter system crashes and sensor failures. Not every owner knows how to turn off Meiza without a sensor and solve this problem.

Hardware

Or as it is also called - software, this is the external environment of the smartphone, its shell. Since the Meizu company focuses on the Chinese market, adaptation problems in the European region often arise. What causes malfunctions in the touchscreen:

1. Memory full. This applies to both RAM and internal memory. The smartphones are based on the Mediatek processor, which is not famous for the performance of its components. When running several applications at the same time, users notice that the phone plays images more slowly and gets very hot.
2. Ando Crashes >

Causes of the problem

Often, the phone presses buttons on its own due to a hardware or software failure. In the first situation, the reason is a breakdown of components, and in the second, a software problem.

Let's look at the most common reasons when the phone screen clicks on its own:

• Mechanical damage to the gadget.
• Phone falling.
• Low quality resistive screen.
• Poor quality assembly.

It is necessary to start solving problems with software methods. If they do not help, then you should resort to hardware repair.

Component problem

Problems with internal phone components occur for the following reasons:

1. Moisture. If the phone is exposed to high humidity or direct moisture entering the device, some parts may break.
2. Low quality components. Despite the fact that the Meizu company tries to produce its products with high-quality components, the possibility of defects is still present.
3. Poorly soldered Home button cable.

Solution

Water getting into the phone body can be resolved without contacting a service center. It is recommended to dry the device with a standard hairdryer, without using high heat, or disassemble the phone into components and let the components dry separately.

Inexperienced users can familiarize themselves with a detailed description of the phone disassembly process:

If the desired effect does not appear, or it appears after several days or months, the problem most likely lies in the failure of the Home button on Meiza. It is recommended to wipe the button with an alcohol solution. In addition, you should warm the key with a hairdryer and press it with high intensity. This procedure needs to be done only in assembled form; for some owners, this process helps restore the sensitivity of the key.

Video description about replacing the Home button on Meiza m3s:

If all the procedures did not help, and the sensor does not work on Meizu m3 note, then it is recommended to take the device to a service center. An experienced specialist will analyze the breakdown and suggest replacing the damaged part.

The service center will ask for 1,500 rubles to replace the Home button, excluding the new button. The cost of disassembling the phone will be 600 rubles.

Alternatively, you can use the hardware button function. This will display a button-like icon on your phone's screen that will replace all the functionality of the standard Home button, but it only works in active mode. You won't be able to unlock your device using it.

How to eliminate spontaneous sensor activation programmatically

So, let's look at several ways to solve this problem on our own.

Method 1: Reset your smartphone to factory settings

Depending on the smartphone model, restoring the “default” operating parameters is performed in a certain section of the settings. However, the path to them is the same for most devices; only the names of these blocks differ. Therefore, let’s look at how to reset the settings to factory defaults, using the Philips S326 smartphone as an example.

1. So, first you should go to the “Settings” section;
2. Here, in the “Personal Data” block, find the “Restore and Reset” tab, click on it.

   
   To go to the factory reset options, you need to click on the “Backup and reset” tab

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3. Next, in the “Return to factory settings” section, select “Reset settings”;

4. A window opens in which you need to click on “Reset device settings” - done, reboot your smartphone and check if the problem has gone away.

Method 2: Screen Calibration

Re-calibration of the touchscreen may be necessary not only in the event of a software failure, after which the sensor on the smartphone clicks on its own. After a mobile device falls from a height, falls into water, replaces the display, etc., calibration must be carried out - this can help in most of the cases listed here. Let's consider two methods that allow us to carry out this procedure.

Screen calibration using standard tools built into the smartphone

In those device models that have the ability to determine the tilt angle of the touchscreen as standard functionality, you can calibrate it without using special utilities. For this:

1. Go to the “Settings” section of our device;
2. In the “Display”, “Screen” or “Special Features” block, find the “Calibration” item and click on it;
3. The next window suggests, as a rule, to place the phone on a flat surface and start the calibration procedure, then your device will automatically adjust the optimal touch angle and complete it.

Using the special application “Touchgreen Calibration”

This method is suitable for those whose smartphone models do not have built-in tools for screen calibration. The application compares favorably with similar ones, first of all, due to its ease of use, as well as the very high accuracy of determining the angle of the sensor.

1. So, to calibrate the screen using Touchscreen Calibration, you need:
2. Download the application from the link on Google Play - https://play.google.com/store/apps/details?id=redpi.apps.touchscreencalibration;
3. After installation, we launch the program, in the start window we see the inscription “Calibrate” framed in a blue background, you need to click on it;

Click on “Calibrate” to begin the touchscreen calibration process.
The calibration procedure begins, during which you will be asked to adjust the screen angle in six different touch modes, go through each of them;

Do not forget that the smartphone must be on a flat surface all this time for the calibration to be as accurate as possible.

When finished, you will be prompted to reboot your device for the changes to take effect.

As a result

Problems with the touchscreen on Meizu phones can be caused by various factors. Some of them can be solved independently, without involving third-party specialists, some can be solved only by repairing or replacing components.

Incorrect functioning of the sensor can be expressed in different ways. The most common variation of the defect on the Meizu M5 is a failure to respond to the lower part of the display. We are talking about a thin strip located just above the home button. Its incorrect operation does not jeopardize the condition of the phone as a whole, but makes its use less effective.

The main reasons for the bottom of the display not working

Most often, the lower part of the screen does not work on the Meiza M5 due to mechanical damage resulting from the fall of the gadget or moisture penetration into it. An explanation may also be a sharp temperature change, as a result of which condensation forms in the smartphone body, leading to oxidation of the contacts. In addition, the most common causes of the defect include:

• Failure of the touchscreen (small damage or complete rupture);
• Oxidation of printed circuit board microcircuits;
• External glass damage (chips, cracks).

We cannot rule out software glitches due to which the screen does not work on the Meiza M5. Most often, this is incorrect firmware, installation of a third-party application, or the device’s memory is full.

Troubleshooting Software

If your gadget has not recently been subjected to external physical influences, and there are no chips or cracks on the glass, then it is likely that the failure of the lower part of the display is due to a software glitch. And almost any system error can be solved by completely resetting the device. It returns the settings to the factory level, clearing the gadget of all third-party files.

You can reset through the main menu:

1. Settings;
2. About the phone;
3. Storage;
4. Backup;
5. Reset.

If, due to a non-functional part of the screen, you are unable to get to the device menu, use restarting the gadget in Recovery mode:

1. With the device turned off, hold down the power and volume up keys at the same time;
2. When the Meizu screensaver appears, release the Power button;
3. When opening the recovery menu, release the Volume key;
4. Select the Clear Data command;
5. Start the cleaning process using the Start button.

Switch between commands using the volume keys and confirm with the power button. Before starting the procedure, create a copy of important files, because... After a restart, all information on the device will be erased.

Systemic reasons.

If the Meizu M8 is buggy, the sensor freezes, in addition to the physical impact. Screen problems can also be caused by a system failure. As a rule, this happens due to the device’s memory being full or insufficient RAM. A large amount of unnecessary cache and residual data from various applications. This failure can also be caused by an inappropriate firmware version of the gadget. We will repair xiaomi battery, with a guarantee, we carry out more than 1000 different repairs. This happens mainly due to self-updating of the device from third-party sources. Because of this, virus software gets onto the phone. Which can also affect the operation of the sensor.

What to do if the bottom of the Meizu M5 screen does not work due to breakdowns

Mechanical repairs should be resorted to if the reset did not give the desired result. In this case, you should act according to the following algorithm:

1. Diagnostics (the service center technician will accurately determine the damaged element that needs to be replaced);
2. Purchasing parts (it is important to purchase components that are reliable and fully compatible with your phone model);
3. Repair (you can replace it yourself or by contacting a service center).

In our GadgetParts online store you can purchase a touchscreen, module or screen to restore the functioning of the lower part of the display of your Meizu smartphone, or devices of other popular brands at an affordable price. We sell only certified spare parts from trusted manufacturers. In addition, on the website you will find detailed instructions for replacing a specific element (necessary for self-repair).

A non-working touch display makes the management and operation of a multifunctional Meizu smartphone almost impossible. Coping with the problem that has arisen.

Some users of Xiaomi smartphones often experience a problem - the home button on the xiaomi mi 5 does not work. A similar situation may be associated with.

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• delete everything
• Disable

What can you do?

Only systemic causes can be eliminated on your own. For example, removing residual files and cache from the system can be done quite easily. Just go to “settings” and select the “system” tab. After this, a new window will open in which you need to click on the “ applications ” item. In the window that opens, you need to click “erase data”, then select “clear cache data”. You can also perform a full reboot of the device. You need to turn off your smartphone and remove the battery for 20 seconds. Then insert it back and turn it on. This method can eliminate system failures. If the sensor does not react at all and the physical keys do not have the desired effect. It is necessary to forcefully remove the battery. Wait a while, then insert it back, hold down the phone's power key and the volume rocker. After the company logo appears on the screen, the keys must be released. In the menu that appears, you must select “ data ”, and then “ Start ”. This method will restore your phone to factory settings. All existing data, including personal data, will be lost.

If nothing works, then the screen is broken and you will have to replace the entire display.

Physical failure

Perhaps the most common cases of sensor failure occur specifically in the hardware of the device.

If there are cracks on the screen of your smartphone, then the likelihood of a problem with the touchscreen is high.

Even if you used a phone with a crack, water could get into the board and chips through these cracks. And water is a conductor of electricity, and it can short-circuit microcircuits.

The malfunction may also be inside the smartphone itself. For example, the cable from the touchscreen could simply move away upon impact and the contact would be immediately broken. And the device screen stops responding to touches.

And by the way, the microcircuit that is responsible for signals from the sensor to the processor may also be damaged during impacts. Therefore, the malfunction may be hidden.

Also, don’t forget about water ingress; even a small drop is enough to make your gadget stop responding to touches.

And the microcircuit itself, which comes in a separate cable from the screen, may also fail (depending on the smartphone model).

Further diagnostics

Therefore, in order not to guess, you need to open the smartphone and examine its insides. If you do not have experience and tools in disassembling phones, it is better to contact a service center.

What you need

And if you still decide to disassemble your mobile phone, then you will need:

• Hair dryer. Can also be used for drying hair;
• A set of screwdrivers (depending on the type of your phone);
• Thin plastic cards and mediators;
• Alcohol or Gasoline Galosh;
• Brush;
• Glue B7000;
• Tweezers.

And this is a unified set.

It is possible that your device may only require one screwdriver.

Precautionary measures

Always disconnect the battery before touching the cables, otherwise you risk damaging the board from static electricity.

The cables are very thin and can easily tear, so pull them out carefully and without sudden movements.

Record all bolt locations. Do not try to screw long bolts into places where there were short ones. Otherwise, you may damage the board or body of the smartphone.

If you need to heat the back cover of the device, then always set the temperature of the hair dryer no higher than 90-100 °C. And heat for no longer than 5 minutes, otherwise the lid will become deformed and ruined.

Looking for instructions

Each phone model can be disassembled differently due to its design and layout. Search the Internet for your smartphone model and disassembly instructions. Sometimes you may find incomplete instructions. Or it may be that everything is simple in the video, but in reality it is much more complicated. It’s just that sometimes in videos they open everything up behind the scenes, but in the video itself they show how easily everything comes off. Therefore, do everything without sudden movements, even if everything in the instructions opens easily and simply. Sometimes this is not the case, quite the opposite.

There is no need to completely disassemble the smartphone. All you need to do is gain access to the board.

Carefully inspect the printed circuit board for traces of oxides and stains, look carefully at the connectors of the cables.

Physical damage to the sensor

Before using the services of specialized service centers, the best option would be to carry out a preliminary diagnosis of damage. Most likely, after a diagnostic test the problem will not go away, but this will make it possible to identify non-working areas of the screen. To gain access to the tools, you will need to enter a specific USSD code. This code is different for each phone.

In TSP Dot mode, small dots may appear when you press the touch screen of your mobile phone. Thanks to special functionality, it becomes possible to determine the most damaged part of the touchscreen display. Another reason for the breakdown may be due to the device falling. In this situation, the digitizer cable becomes loose and the touch screen does not respond. In most cases, the problem is corrected quite quickly: if you lightly knock on each corner of the screen, then in this way you can solve the problem.