How to turn on Xiaomi if the lock button doesn’t work: the complete guide

When Xiaomi's smartphone is completely discharged and the power button fails, it can take anyone by surprise: the device's screen is out, the display is missing, and it seems that the gadget has turned into a useless piece of plastic. However, a physical breakdown of one key does not always mean that the phone cannot be started. Android engineers have provided several software and hardware loopholes to bypass the faulty power button.

In most cases, the problem is not the core of the system itself, but the sticking or mechanical wear of the microswitch. Before you bring the device to the service center, it is worth trying software intensive care methods that often help Redmi and Poco models come back to life. Below we will look at proven ways, from simple manipulation of charging to the use of debugging console commands.

It's important to understand that the effectiveness of each method depends on the degree of battery discharge and the specific model of your smartphone. If the battery is down, the first priority is to supply power, and then start the operating system. Don't rush to disassemble the case, as this will deprive you of warranty service.

Use of connection to computer and charger

The easiest and most affordable way to launch a Xiaomi smartphone without a power button is to use the device’s response to the voltage. Modern power controllers in smartphones are configured to respond to the connection to the power source, even if the device is turned off. For this you will need an original cable. USB and the power supply or computer with an active USB-port.

Connect the discharged smartphone to the charger. If the battery is not gone into deep sleep, the Mi logo or an indication of the charging process may appear on the screen. At this point, it is important not to miss the system reaction. Some Xiaomi models, when connected to a PC turned off (or a laptop in sleep mode), can automatically switch to Fastboot mode or simply turn on, perceiving the data signal as a command to start.

⚠️ Warning: If the phone shows the charging logo but does not load further, try clamping the volume buttons immediately after the cable is connected.This can help put the device into Recovery mode, where you can start the system.

If a standard connection didn't work, try the hot method of connecting to a running computer. Connect the cable to the PC, wait for the system to recognize the device (if it was in sleep mode), and only then connect the second end of the cable to the smartphone. Sometimes a voltage surge or a specific data signal causes the MIUI controller to initiate a boot.

Launching through Recovery and Fastboot mode

Low-level modes like Recovery and Fastboot are part of the bootloader and work independently of the main operating system. You can get into them with a combination of keys, which often allows you to bypass a broken on button. To log into Recovery Mode on most Xiaomi devices, you need to press the volume button (+) and connect the power cable.

The process is to make sure the phone is turned off. Press the Volume Up button and hold it, plug a USB cable connected to the charger or PC. Hold the button until the Mi Recovery logo appears. The menu that opens will be navigated by volume buttons, and the choice will be made by the same button or, in some cases, touchscreen if it works.

If you managed to get into the recovery menu, select Reboot and then Reboot to System. This will force you to start a regular Android boot. A similar method works for Fastboot mode, only you need to press the volume button (-). In Fastboot mode, you can try to send a command to turn on from your computer, if you have the appropriate tools installed.

Importantly, on some new USB Type-C models, entering these modes may require double tapping or a specific sequence of actions. If the first time fails, turn off the cable, release the buttons, wait 10 seconds and repeat the procedure.

Using ADB commands to turn on a smartphone

The most professional and effective method is to use the Android debugging bridge (ADB), which requires a computer (Windows, macOS or Linux) and a pre-installed driver for your device, and sends a program signal to turn on directly to the power controller.

To start, you need to install the Platform-tools package from the official Google website. After installing and connecting the smartphone to the PC (sometimes you need to pre-debug USB on the phone, but in Fastboot mode this often works without it), open the command line in the folder with ADB. Enter the command to check the connection: adb devices. If the device is determined, you can go to the on command.

adb reboot

This command sends a reboot request. If the phone is in Fastboot mode, use the command: fastboot reboot. In some cases, when the system is getting stuck in deep sleep, the adb shell svc power stayon false command helps, although it is more often used to control the screen. The key here is that the signal is programmatic, bypassing the physical contact of the button.

⚠️ Attention: For work ADB-If the battery is completely dead, the software methods will not work until power is provided.

If the standard commands don't work, you can try more complex scripts that emulate pressing. However, if the power button is physically destroyed (broken inside), then after the first battery is turned on and discharged, you will again encounter a problem, so this method should be considered as a temporary solution or a way to save data before repair.

Applications of assistants and automation

If you've managed to run your smartphone with one of the above methods, your next task should be to prevent the shutdown in the future, and there are specialized applications that allow you to control power programmatically, and one popular solution is the Volume Power app, which reassigns the turn on function to the volume buttons.

Once installed, you will need to give it the necessary rights, including access to special features (Accessibility).In the application settings, select the option to turn on the screen when you press the volume button long enough, which will allow you to wake the phone and even turn it on (if it was not completely turned off, but only turned off the screen) without using a damaged button.

You should also pay attention to the settings of the MIUI system itself. In the Settings → Advanced Settings → Buttons (the path may vary depending on the firmware version) you can adjust the operation of the volume buttons. Although you can not normally turn on the phone off through volume, you can configure automation scenarios.

• 📱 Install a power management app from a verified source.
• 🔋 Set up screen-on triggers when charging is connected.
• ⚙️ Activate the “Always on Display” mode to save on cycles.

Using these software crutches is a temporary solution, and it doesn't eliminate the cause of the failure, but it allows you to use the device comfortably until the part is replaced, and remember that the background processes of these applications can consume additional charge.

Hardware methods and temporary solutions

When software is exhausted and the phone needs to be turned on urgently, you can use a gentle physical approach, which requires caution and understanding of the design of the smartphone, and the idea is to mechanically close the contacts of the power button on the board, simulating a press.

To do this, carefully remove the protective case. Find the lock button and try to press it with a thin but blunt object (for example, a plastic card or the back of a stylus), applying a slightly greater force than usual. Sometimes the contacts simply oxidize or fall, and the stronger pressure helps to close them. You can also try to slightly bend the case near the button (very carefully!) to change the geometry and close the contact.

There is also a method of short-term heating of the back cover in the area of the power button with a regular hair dryer. Heat can expand materials and help the contact close. However, overheating is dangerous for the battery and display, so use this method only as a last resort and do not heat the surface above 40-50 degrees.

Prevention and setting up of the inclusion schedule

To minimize the risk of a phone crashing in the future, it is advisable to set up automatic turn on on schedule. On Xiaomi smartphones, this feature is built into the system. Go to Settings → Battery → Schedule on and off (or through a search for settings, type “schedule”).

Set a daily turn on time, for example, 5 minutes before you wake up. Even if the phone turns off at night due to a discharge or failure, it will turn on itself at a given time if there is any charge left in the battery, a critical setting for devices with a faulty button.

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Set an alarm in a third-party app that can wake the phone from a shutdown. The standard MIUI alarm also has this feature, but third-party apps often run more stable.

Also, try to keep the device from running out of power. Set up a low-power voice alert. If the button doesn't work, you can't turn the phone on if it sits at zero away from charging. Keep the charge above 15-20%.

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Set up auto-on schedule is the only guarantee that you can use the phone after full discharge without a serviceable power button.

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