Why the Mi A1 power button may fail and what to do about it
The power button on the Xiaomi Mi A1 is one of the most vulnerable parts of the smartphone. Over time, it starts to go off, requires a strong press or completely stops responding. The causes of failure can be different from mechanical wear (dust, moisture) to software failures after updates. But what if the phone is dead or turned off and the power button does not work?
In this article, we will look at all possible ways to turn on the Mi A1 without using the power button, from simple methods with a charger to complex manipulations through the ADB and disassembling the case. It is important to understand that some methods require preparation (for example, enabled debugging over USB), so they are better tested in advance on the working device.
If your Mi A1 doesn't respond to charging, doesn't vibrate when you connect the cable, and doesn't show signs of life, the problem could be deeper than just a faulty button, which would require a board or battery diagnosis, but in 80 percent of cases, the phone can be "reanimated" without repair.
Falls/blows|Moisture intrusion|System updates|On his own.|The other.-->
Method 1: Enable via charger (the simplest method)
If the battery is Mi A1 Fully discharged and the power button is not working, try connecting the original charger (or Quick Charge-enabled) first. 3.0). In some cases, the phone will automatically turn on when the minimum charge level is reached (usually a low charge level). 5-10%).
Here's what we need to do:
- π Connect Mi. A1 to the charger with USB-Type C cable.
- β³ Leave on the charge at least for 30-40 minutes (even if the indicator does not burn).
- π± Try pressing and holding the volume button (+) on 10-15 Sometimes it works instead of a power button.
- π If the screen remains black, turn off and reconnect the charging β sometimes this provokes a start.
This method works if the problem is only in the mechanical part of the button and the power controller is in good condition, so if the phone doesn't respond even after an hour of charging, move on to the next one.
β οΈ Warning: Do not use cheap chargers without protection from voltage drops. A1 with a faulty power button this can cause damage to the charging controller.
Cable and power supply original or certified|Type-C connector contacts are clean (no oxidation)|The phone does not overheat during charging.|The charging indicator flashes or burns constantly-->
Method 2: Recovery Mode (if the phone is responsive)
If the Xiaomi Mi A1 vibrates when you connect the charger or the screen lights up briefly but does not turn on completely, you can try to enter Recovery mode. This method is suitable if the power button is partially working or the phone is βhangβ on the logo.
Instructions:
- Turn off the phone from charging.
- Press and hold the volume button (+) and the power button simultaneously for 10-15 seconds.
- If the power button is not pressed, try holding only the volume button (+) and plug in the charging (sometimes it works).
- When the Mi logo appears, release the buttons β the Recovery menu should open.
- In the menu, select Reboot system now (reboot) using volume buttons and confirm the choice with the power button (or by pressing the volume button long enough if the power is not working).
If you can log in to Recovery, but the phone doesn't turn on again, try resetting to factory settings (Wipe data), which will delete all data, but can solve the problem with the system freeze.
| Action in Recovery | Button combination | The result |
|---|---|---|
| System restart | Loudness (+) + Power β Reboot system now | The phone will restart in normal mode. |
| Resetting settings | Volume (+) + Power β Wipe data β Yes | All data will be deleted, but the phone can turn on |
| Clearing the cache | Loudness (+) + Nutrition β Wipe cache β Yes | Temporary files will be deleted, settings will be saved |
β οΈ Warning: If the phone doesn't turn on after resetting via Recovery, but it reacts to charging, the problem may be the damaged firmware.
Method 3: Enable via ADB (if USB debugging was enabled)
This is the most reliable way, but it only works if the Mi A1 has previously been activated by USB debugging (Settings β Developer β USB debugging).
What you need:
- π₯οΈ A computer with installed Xiaomi drivers and ADB.
- π Original. USB-cable (better than the one that came with the kit).
- π Utility. ADB (You can download from the official Android website).
Step-by-step:
- Connect the Mi A1 to your computer via USB.
- Open the command line (Win + R β enter cmd).
- If you have a phone number, go to the next step. If you don't, try another cable or USB port.
- Enter the command to reboot: Adb reboot The phone must reboot.
- If it doesnβt work, try to force the screen to turn on: adb shell input keyevent 26 (this is a simulation of pressing the power button).
If ADB canβt see the device, but the phone is responding to charging (the indicator is on), try installing drivers manually through Windows Device Manager. For the Mi A1, the Qualcomm HS-USB QDLoader 9008 driver will suit.
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If the ADB doesnβt detect the phone but itβs responding to charging, try holding the volume button (+) when connecting to a PC β sometimes this helps the utility to βseeβ the device.
Method 4: Disassembly and short-term closure of the contacts of the power button
If the software methods didn't work, and the power button is completely faulty, you can try to manually close contacts on the board, which is a temporary solution, but it will help turn on the phone for backup or flashing.
Attention! This method requires precision and basic electronics skills, and the wrong actions can short-circuit and ultimately break the phone.
What you need:
- βοΈ Plastic blade or mediator for opening the body.
- π§ Torx screwdriver T3 (Mi screw A1).
- π§² Thin metal object (clip, tweezers).
- πΈ Camera (to photograph the location of the parts before disassembly).
Instructions:
- Turn off your phone (if it is still responding to charging).
- Remove the back cover by pulling a plastic blade over the bottom edge (where the Type-C connector is). Be careful, the lid is attached to the latches.
- Unscrew 10 Torx T3 screws holding the metal plate.
- Carefully remove the plate and disconnect the battery plume (it is under a black insulation tape).
- Find the power button on the board - this is a small metal "bubble" next to the Type-C connector.
- Shortly close the two contacts under a tweezer or paper clip (as if you were pressing a button).
- If the phone vibrates or the screen lights up, quickly connect the battery back and collect the case.
This method works 60-70% of the time, but it requires caution, and if the phone doesn't respond after the circuit is closed, it could be the power controller or the firmware.
What if the phone does not turn on after the contacts are closed?
Method 5: Using an external battery charger
If the Mi A1 battery is completely discharged and the phone does not respond to charging, you can try charging the battery separately using an external charger (for example, the TP4056 or the universal frog).
For this:
- Disassemble the phone (as in the previous method) and disconnect the battery.
- Connect the contacts of the battery to the charger, observing the polarity (+ to +, - k).
- Charge the battery for 20-30 minutes.
- Install the battery back and try to turn the phone on by closing the contacts of the power button (method 4).
This method will help if the problem was deep battery discharge, which caused the power controller to block the power switch, after charging the phone should normally respond to the connection to the network.
β οΈ Warning: Don't charge the Mi battery A1 direct from high-power sources (e.g., a laboratory power supply) without limiting current. The maximum charging current for this battery is 2A.
What if none of the methods worked?
If all of these methods didnβt help you turn on the Xiaomi Mi A1, the problem could be more serious than just a faulty power button.
| Symptoms. | Possible cause | Decision |
|---|---|---|
| The phone does not respond to charging, no indication | Failed Power Controller (PMIC) | Repair in the service center (chip replacement) |
| The phone vibrates, but the screen doesn't turn on. | Display plume or matrix damaged | Screen diagnostics, plume replacement |
| The phone turns on, but immediately turns off. | Short circuit on the board or battery failure | Microscope check, battery replacement |
| The phone is only loaded in Fastboot. | Firmware or loader damaged | Flashing through the Mi Flash Tool |
If you are not sure about your skills, you should contact the service center. The average cost of repairing the power button on the Mi A1 is 800-1500 rubles (depending on the region), replacing the power controller will cost more - 2000-3500 rubles.
If the phone is turned on but the power button is still not working, you can temporarily use applications to control power through the sensor (for example, Power Button to Volume Button from Google Play).
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If the phone has any response to charging or connecting to a PC, the chances of a successful turn on are 70-80%, and if there is no reaction at all, the problem is more hardware, and repairs are necessary.