Meizu M3 is a smartphone that should have been a hit. It belongs to the budget segment, has good characteristics, and is definitely a bestseller. High-quality filling and a good price are what people need.
Recently, owners of this phone began to complain that the fingerprint did not work. As it turns out, the problem is quite common. What are the reasons for the breakdown? This problem may be a consequence of:
Let's figure it out.
Most likely, the problem is in the fingerprint button itself, which just needs to be replaced. But before you do this, remember what happened to your gadget recently. Maybe he fell somewhere, hit himself, or fell into the water. If this happened, then he suffered a mechanical failure. In Meizu M3, this button is responsible for three important functions:
If all three functions stop working, then most likely the mTouch has failed.
Mechanical failures of the mtouch can occur if it is dropped or gets wet. If the smartphone is under warranty, we advise you to take it to a service center; if not, then contact a regular mobile phone repair shop; In extreme cases, you can repair the breakdown yourself. To repair it yourself, order a button, remove the board and replace the broken part. The cause of the breakdown may also be hidden in software problems. Repairs can cost you 1,500–3,000 rubles.
If you don’t understand phones, don’t bother, it’s better to take it to a service center, let them run diagnostics and find out exactly what the problem is.
If your phone has stopped responding to a fingerprint and you are absolutely sure that everything has been fine with it lately - it has not fallen anywhere, has not been hit and moisture could not get there, then the possible reasons for the failure of the mtouch key may be that The firmware crashed. To solve the problem, just reset the settings to factory settings - and everything should work. To do this, go to the " About the phone", enter the tab " Reset" and press " Start».
But be careful, as this procedure will clear all data from the phone, so it is worth creating a backup copy of the data. If everything starts to work, then there are no problems, but if it doesn’t work, then I advise you to return to the previous point.
The Meizu M3s smartphone has become widespread among fans of modern gadgets and mobile phones. However, some time after the start of sales, many owners began to encounter the problem of a mechanical Home button with a built-in mTouch fingerprint scanner not working. Thus, the functions “Back”, “Home” and unlocking the screen with a fingerprint have become unavailable.
In this article we will talk about the causes and ways to solve this problem. And if you urgently need to fix your smartphone, or any other device, we recommend contacting the service center https://m-service.com.ua/.
So, there may be several reasons why a mechanical key in Meizu M3s may fail. The most common of them are the following:
Incorrect firmware installed;
Penetration of moisture into the smartphone;
Factory defect or mechanical damage.
The first case is an incorrect firmware version, which is usually found on Meizu M3s smartphones imported from China without certification. Such devices are usually purchased from Chinese online stores - Aliexpress, TaoBao, etc. Smartphones have the Asian version of firmware installed, while the official Global firmware is needed.
Solving this problem is very simple - you need to install the Chinese version of Flyme 5.1.5.1A and clear all data. Next, check the button for functionality. If the problem is solved and the mechanical key is working, you need to switch to the international Global firmware by changing the ID.
The next problem is associated with water, moisture or condensation getting inside the device, followed by oxidation of the mechanical key (possibly other parts of the phone), which is why the button subsequently refuses to work.
In this case, disassembling the smartphone and cleaning the button from the formed oxides can help. However, if you are not “strong” in disassembling mobile phones, it is better to contact a specialized service center (one of which we recommended above).
It’s very good if the Meizu M3s smartphone is still under warranty. In this case, it is better to contact a certified service center, where they will diagnose and replace the key free of charge. However, users of Meizu M3s phones focus on the fact that the problem begins to appear 1 year after purchase, which means the warranty expires in this case.
Please note that if you decide to carry out the repair yourself, you will need a new mechanical key. You can purchase it either in online stores of service centers (by the way, in"M-Service" such a button is available), or purchase directly from China through Aliexpress . When purchasing from China, pay attention to what kind of key you are purchasing. There are two versions "VF SF" and "VGS". In the first version of the button, according to customer reviews, the defect may appear after some time, but the VGS version does not have such a problem.
Information support: https://m-service.com.ua/
One of the weak points of Meizu smartphones is the fingerprint scanner (mTouch). Some owners complain that this button does not perform its functions immediately after purchasing a mobile device. For others, it fails after a certain time. If the phone is under warranty service, then the problem of a non-working mTouch can be solved by returning the device to a service center. If there is no warranty, you can try to fix the defect yourself. Let's look at what to do if the fingerprint does not work on the Meizu M3 Note, M3 mini or another gadget from this manufacturer.
In all Meizu smartphones, the fingerprint scanner is built into the proprietary mTouch touch-mechanical button, which has three functions:
If all three functions on your device (Back, Home and Scanner) stop working at the same time, most likely the mTouch button has simply failed. A similar problem may appear after a strong impact, fall or wetness of the phone. However, sometimes a malfunction occurs without any apparent reason.
If the warranty period for Meizu M3 has not yet expired, it is better to take it to a service center. Otherwise, you can change the broken key yourself:
If the cause of the malfunction is moisture on the phone, after disassembling, carefully inspect the key contacts. If there is oxidation, clean them with alcohol and a soft cloth. 
If the fingerprint scanner and the “Back” function suddenly stop working on your Meizu M3 Mini, you shouldn’t discount a software malfunction. On Android devices, such malfunctions happen quite often. To eliminate them, you will need to reset all settings on your mobile phone to factory settings.
After a complete cleaning and reboot, the mTouch button should return all functionality.
The hard reset procedure deletes not only all settings from the phone, but also user files located on the gadget’s internal memory. Therefore, before activating it, save important information to an external drive or computer.
If you bought Meizu on AliExpress or another Chinese platform and the fingerprint scanner does not work on it from the first days of use, most likely, the smartphone was originally developed for the Asian market and it has local firmware or, at best, a Russianized image of the global one. To check the firmware, you need to go to the About phone section and see what is written in the Flyme version line. If the last letter is A, U or C, then it is a Chinese firmware. The global version ends with G or I. 
To fix the problem, you will need to install global firmware by changing the ID. This is done as follows:
The Meizu m3 smartphone has a sensitive key with a built-in sensor under the display. It is designed to identify the owner’s fingerprint, activate a menu section, and execute the “back” command. The inability to perform these actions, or one of them, indicates that the meizu m3 touch button does not work.
There are several reasons why such a breakdown occurs.
Failure may occur due to software and hardware faults. Errors in the system shell can cause this defect when:
Problems in the hardware of the smartphone most often lead to the fact that the meizu m3 button sensor does not work. They may be present initially, or appear as a result of improper use by the owner.
The sensitive module may have suffered mechanical damage due to:
Damage to your phone due to moisture can occur when you use it in the rain, touch it with wet hands, or stay in a damp room.
After these destructive influences, cracking, splitting, and oxidation of the button elements occur; in fact, the entire component becomes unusable and requires replacement.
It is recommended to start solving problems with the system by simply rebooting the gadget. If this does not help, you need to install the official update, or replace the entire system with a licensed one. In some cases, the situation can be corrected by a standard reset to factory settings. Before starting these procedures, it is advisable to make a backup copy of all valuable smartphone data.
If the button sensor of the Meizu M3 does not work, it is appropriate for users who know how to operate the device’s engineering menu to use software calibration of the key. In some cases, this completely eliminates the problem.
There is an unconventional solution to the problem: the non-working module is replaced with a virtual one. This is accompanied by the visualization of a special widget on the display. This feature is available in the device's accessibility menu and can serve as either a temporary or permanent solution. It should be remembered that the virtual button cannot read a fingerprint, so this method will not work for users who use this method of protection.
When the touch button on the meizu m3 stops working due to moisture getting into the key module, you can try to eliminate the problem if you do this immediately after the incident, when the wetness is very weak. The first necessary action is to turn off the power to the phone in order to prevent oxidation from spreading deep into the digital component of the device.
Then gentle drying with non-hot air is possible. To do this, the phone can be partially disassembled if the owner has the necessary knowledge and skills. During the procedure, stimulation of the key is useful: pressing it multiple times expels heated air, which takes with it particles of moisture.
After warming up, treating the button assembly removed from the phone with alcohol may be effective, since alcohol has the ability to dry out moisture.
When disassembling the phone, it is appropriate to pay attention to the button cable - it may not be tightly inserted into the connector initially, or it may be partially disconnected due to an impact. In this case, securing it tightly helps.
If the cable has an incorrect connection, or the key module turns out to be broken, jammed, or substandard, then such defects usually cannot be repaired and the most reasonable solution is to completely replace the entire sensitive unit with a working one. You can purchase a spare element at the GadgetParts store, where prices for all products are quite affordable. You can also find complete instructions for replacing them here.
The main reason why home button stops working in Meizu M2 or M2 mini - moisture gets into it. Perhaps you spilled water on this button or just got caught in the rain - it doesn’t matter. Once moisture gets in, it will no longer work normally. It is very strange that the manufacturer did not take care of at least some kind of moisture protection.
Home button failure manifests itself in different ways. It may fail completely, the sensor may stop working, while pressing works normally, or vice versa. I had the following case: the Home button out of the blue in my Meizu M2 Mini started working incorrectly. Touching didn't work at all, but pressing did. I already thought that this was a problem with the Android operating system and decided to reset the settings, but it didn’t help.
The solution using a hairdryer, which I saw on YouTube, helped partially, the problem returns 5-10 minutes after drying. I found a very simple solution to this problem - using regular alcohol and a cotton swab, I carefully wiped the Home button around the entire perimeter, while pressing it so that a little alcohol gets inside. The result is that the Home button in my Meizu M2 Mini has been working properly for more than two months.
I just suggested one of the options for fixing the problem of a broken Home button in Meizu M2 Mini. If you make it worse, it's not my fault.
If my solution doesn’t help you, don’t panic - try taking your phone to an authorized service center, they may be able to replace the home button under warranty. If they refuse to do this or you do not have an official warranty for the device, then there is only one way out - buy a home button for Meizu M2 on some Chinese site, for example on Aliexpress, fortunately
