How to turn on Xiaomi Redmi 9T: from simple start to resuscitation

Owning a modern smartphone begins from the moment of its first launch, and for owners of the Redmi 9T model, this process can be both a joyful event and a source of anxiety if the device does not show signs of life. The smartphone is a complex system where the software is closely intertwined with the hardware, and sometimes even trivial inclusion requires an understanding of the hidden mechanisms of the gadget. In most cases, the problem is solved by simply pressing a button, but there are nuances that only experienced users and specialists of service centers know.

If you've just unpacked a new Xiaomi or taken out of the box an old one that's been lying idle for a long time, the algorithm of actions will be slightly different. The lithium polymer battery installed in this model has the property of self-discharging when it's downtime that can create the illusion of failure. It's important not to panic and consistently check all possible scenarios, from elementary charging to forced system restart, to exclude software failure.

In this article, we will discuss all aspects of the device launch in detail, paying special attention to situations where the screen remains black and the LED indicator is silent. We will look at the operation of hardware buttons, features of the Fastboot mode and methods of system recovery that will help to bring your gadget back to life without contacting the service center. MIUI.

Initial start and activation of the new device

When you first pick up the new Redmi 9T, the device is in what's called sleep mode to keep the battery in stock. To wake the mobile device, you need to find the on button, which is on the right side of the case on this model, which is usually elongated and can be combined with a fingerprint scanner, which is the standard for modern budget smartphones.

Press and hold the power button for 3-5 seconds. You should feel a slight vibration or see the MI logo on the screen. The boot process takes from 30 seconds to one minute depending on the version of the firmware installed. If the screen catches fire but says that the battery is discharged, connect the original USB-C cable to a power supply of at least 18 watts for quick activation.

Once the logo appears, the system will begin to verify the integrity of the files and prepare for the first use. SIM-So you can choose the interface language, and you can't skip the initial setup steps, because this is where the display is calibrated and the energy saving is set up, which is critical for the Redmi's autonomy. 9T.

☑️ Pre-introducement check

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Importantly, when you first turn on after you buy, the phone can get hot, which is the normal reaction of the Snapdragon 662 processor to initially index files and install system updates in the background, let the device complete all the processes, even if it takes a while, and don't interrupt until the desktop appears.

What to do if the Redmi 9T does not turn on and react

When a smartphone completely ignores the power button, it often causes panic, but in 80% of cases the reason lies in deep discharge or freeze system. If the Redmi 9T does not respond to short presses, try to perform a forced reboot. To do this, press the power button and hold it continuously for 10-15 seconds until you feel the vibration.

⚠️ Warning: If the phone has been completely discharged, it may not turn on immediately after charging. Leave it on the charger at least for the first time. 30-40 minutes, even if the lights are not on.

Sometimes the problem is oxidation of the contacts or a cable malfunction. USB-The cable and the power supply are in good condition. USB Type-C in the model 9T It is reliable enough, but dust and pile from pockets can block normal contact, preventing current from being supplied to the battery.

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If the device is making a vibration sound but the screen is still black, perhaps the display or plume is damaged, then listen to the system sounds: if you hear the lock or notification sound, then the motherboard is functioning, and the problem is of a hardware nature associated with the display module.

Forced reset and exit from the freeze

Android malfunctions can cause the interface to fail and the screen to go out, giving the appearance of a phone turned off. Xiaomi has a button combination to solve this problem, allowing you to perform Hard Reset without losing data. Press the power button and volume button up (or down, depending on the firmware version) and hold them for about 15 seconds.

This is a simulation of battery extraction, which was possible in older phones, and the system controller receives a power-reset signal and forcibly restarts all processes, and if the Recovery or Main Menu menu appears on the screen, then the command is successful.

In the recovery menu, the navigation is done with volume buttons, and the choice is confirmed by the power button. You need to find Reboot or Reboot to System. Do not choose the Wipe Data option unless you want to completely erase all photos and contacts from the device's memory.

Why is the phone hanging?
A common cause of freezes is overflow of RAM or conflict of newly installed applications, and can also result in overheating of the processor when using the navigator or heavy games in hot weather. If standard on-boarding methods don’t help, you need to delve into the diagnosis using service modes.Fastboot mode in Xiaomi devices serves for low-level interaction with the phone, for example, for flashing. To get into it, you need to try to turn on the phone that is turned off (or hanging) by holding the power button and the volume button at the same time, if you see an image of a rabbit repairing an android on the screen, or if you see a sign that says: FASTBOOT, So the hardware is good, and the problem is the software. Out of this mode is carried out by holding the power button for a long time (about 10-15 seconds) until vibration. Mode Combination of buttons Appointment of the buttons Indicator on the Recovery screen Volume Up + Power Reset, update, clean the menu with the MI Fastboot logo Volume Down + Power Firmware, Deep Diagnostics of the Hare with the Android Safe Mode Special. Menu When downloading Write Safe Mode in the corner of EDL Special. Combination / Cable Emergency Recovery screen, from the PC can lead to the loss of files, so the process of the "requestor" and the "retching of the device can prevent the recording of the "requering" from the process of the "requestor" and use of the "requency" and the "requestoring of the "requence" to the process of the "requence of the device to the process of the "requestor" and the "requence" to the "request". Problems with battery and charger Model Redmi 9T equipped with a powerful battery 6000 mAh, which is its main advantage, but also a source of potential problems with aging. If the phone is more than two years old, the lithium-ion cell could degrade, and the voltages in the cell could be reduced to aging. 3.3-3.5 The voltage required to start the power controller may not be enough even when you connect the charge. Notice the behavior of the charging indicator. If it flashes orange, it's a signal of critically low charge. In this case, leave the phone connected to the network for a few hours without trying to turn it on. Sometimes you need to "swing" the battery in low currents before the system allows you to start the main boot process. ⚠️ Note: Use of non-original power supplies with high power (more) 25 W) could damage Redmi's charge controller 9T, which does not support the superfast protocols above 18-22 V. It is also worth checking the charging port connector. Condensate or dirt may have accumulated inside it. Carefully, using a wooden toothpick (not metal!), try cleaning the inside of the connector. Often the cloth villi block the contact of the central pins through which the charging goes. If software errors prevent normal switching on, the only way out is a complete reset, which will delete all user data, so it should only be used as a last resort. From the Recovery menu, select Wipe Data, then Wipe All Data, and confirm the action. After the process is complete, which can take a few minutes, select Reboot. The phone will turn on as new, requiring initial setup, which helps to eliminate deep file system errors that may have resulted from improper shutdown or failure when updating the firmware. MIUI. Make sure you remember the password or access to the phone will be blocked. 💡Factory Reset is a radical, but often the only way to programmatically restore a smartphone to health if it stops responding to conventional power commands. Frequently asked questions (FAQ) Why Redmi? 9T Is the display driver likely to have crashed or the screen itself (matrix) damaged. Try to force reboot. If there's vibration and there's no image even in the Recovery menu, you probably need to replace the display module. How long does it take to charge a fully discharged Redmi? 9T? Because of the capacity. 6000 mAh, full charge from scratch can take up to 2.5-3 hours when using the native block 18 The first. 15-20 For a minute, the phone might not even show a charge indicator -- that's normal for a deep discharge. Can you turn the phone on without a power button? Normal means -- no. However, there are special applications (require root rights) or a connection to a PC with certain software that can initiate turn-on, but these are complex technical manipulations. The phone warms up when turned on, is it normal? a slight heating at the top of the case (where the processor is) let's say. If the phone is so hot that it is difficult to hold in your hand, turn off the charge immediately and let it cool down – it may be a problem with the power controller or short circuit.