How to turn on Xiaomi Mi 8 Pro: The Complete Launch Guide

The Xiaomi Mi 8 Pro, released in 2018, is still a popular device thanks to its transparent design and powerful at the time Snapdragon 845 processor. However, like any electronic device, it can face a situation where it ceases to respond to standard user actions. The question of how to turn on the Xiaomi 8 pro, becomes relevant not only when you first get acquainted with the gadget, but also when you experience software failures, deep discharge or hardware malfunctions.

There are several scenarios where a standard start-up procedure might not work, such as a simple battery drain to a critical level, a MIUI operating system freezes at the kernel level, or mechanical damage to components. In this article, we will discuss in detail all possible methods of activating a device, from simple actions to complex engineering manipulations, understanding these processes will help you save time and possibly avoid an expensive visit to the service center.

Before we go to radical measures, we need to rule out the most obvious causes of failure. Often users panic ahead of time without checking the integrity of the charging cable or the state of the power button. We will look at an algorithm of actions that will diagnose the problem and bring your Mi 8 Pro back to life in the shortest possible time.

Standard algorithm for enabling a serviceable device

For a normal smartphone that is off and has sufficient battery power, there is a single proven method. You need to find the power button, which in the Xiaomi Mi 8 Pro model is located on the right side of the body. This button has a characteristic protrusion and is tactile different from the volume rocker located above.

Press the switch on and hold it for 3-5 seconds. If the device is working properly, you will feel a slight vibration, and the MI logo will appear on the screen. In some cases, if the alarm function with the phone turned off, the device can turn on automatically at a predetermined time without your intervention. Once the logo appears, release the button and wait for the operating system to boot.

If the screen doesn't light up, but the phone vibrates, maybe the problem is the display or its plume, and in this situation, try to point the flashlight at the screen, because if you see a barely visible image, then the backlight of the display is out of order. This is a common problem for devices that have been subjected to falls.

⚠️ Note: If you press the power button, the phone makes a sound of the connection to the USB, but the screen remains black, don't try to disassemble the device yourself, this could indicate disconnection of the display plume or damage to the power controller.

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If the phone has been lying unused for a long time, leave it on charge for at least 30-40 minutes before trying to turn on, even if the charge indicator does not light up immediately.

What to do if the smartphone is completely discharged

The situation when Xiaomi Mi 8 Pro does not turn on due to deep battery discharge is one of the most common. Lithium polymer batteries installed in this model have protection against complete exhaustion. If the voltage on the cell falls below a certain threshold, the power controller blocks the start of the device to avoid damage to the chemical structure of the battery.

In this case, a short connection to the network will not work. You will need an original charger and a quality USB Type-C cable. Connect your smartphone to the socket and leave it alone. The charging indicator (a flashing battery on a black screen) may not appear immediately, but after 10-15 minutes. This is normal behavior for a charge controller at deep discharge.

Sometimes the process of “swinging” the battery can take up to an hour. If after this time the phone still does not respond to the on button, try replacing the cable or power supply. Using cheap analogues of charging often leads to the fact that the current is not strong enough to overcome the activation threshold of the controller.

There is also a method of "pushing" the battery, but it requires disassembling the device and the presence of a multimeter, so it is not recommended for ordinary users. USB-The ports, though it will take longer.

Forced reboot when the system freezes

One of the reasons why the Xiaomi 8 pro doesn't turn on is a software glitch where the Android operating system or MIUI shell freezes in a reboot cycle or goes into a black screen, in which case the standard button press may not work because the software controller doesn't process input.

To do this, you need to hold the power button for much longer than you normally would, from 10 to 20 seconds, and in some cases, you need a combination of buttons: press both the power button and the Volume Down button, holding them until you feel the vibration or see the MI logo.

This method simulates battery extraction, which was possible in older smartphones, and is safe for user data and does not delete it. However, if the system is damaged critically, the phone can go back into a bootloop cycle, which would require deeper intervention through recovery modes.

If the device is turned on after a forced reboot but is not running smoothly, it is recommended to check for system updates or remove newly installed applications. Frequent freezes may indicate a lack of free RAM or software conflict.

Diagnostics through Fastboot and Recovery modes

If standard methods don’t work, check to see if the Xiaomi Mi 8 Pro hardware reacts to low-level commands, and there are special boot modes: Fastboot and Recovery, which are possible even when the operating system is damaged, as they start before Android boots.

To enter Fastboot mode, you need to turn off your phone (if possible) and press the Volume Down button. Without releasing the volume button, plug in a USB cable connected to your computer. The Fastboot logo should appear on the screen with a picture of a rabbit repairing an android. If this screen appears, then the display and the main controllers are good, and the problem lies in the software.

Recovery mode is used to reset or flash it. To get into it, press the power button and Volume Up at the same time. Once the MI logo appears, release the power button, but keep the volume until the menu appears. In this menu, the navigation is done with the volume buttons, and the choice is with the power button.

Power button problems and hardware malfunctions

In the Xiaomi Mi 8 Pro, the power button is a physical switch that can wear out or go down over time. If you don't feel the characteristic click when you press it, or the button is too loose, the contact group may mechanically break down, and you won't be able to turn on the phone in the standard way.

There is a temporary solution for such cases, allowing you to turn on the device without the working power button. To do this, you need to enter Recovery mode (using a combination of buttons if the volume button is running) or use ADB-commands from a computer, if previously debugging was enabled USB. The adb reboot command can restart the device and the adb reboot recovery can be sent to recovery mode.

However, if the phone is completely turned off and the button is not working, it is almost impossible to turn it on without disassembling and closing the contacts on the board (which requires soldering skills), and the reason for the lack of reaction can be oxidation of the battery connector on the motherboard, especially if the phone has fallen into water.

⚠️ Warning: Attempts to turn on a phone with a faulty button by disassembling and closing contacts on the board can lead to a short circuit and complete failure of the device without the possibility of recovery.

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The lack of tactile response (click) from the power button in 90% of cases indicates the need to replace the tail of the side buttons.

Frequent Questions and Answers (FAQ)