Xiaomi Redmi 9: how to restart correctly and not break the smartphone

Your Xiaomi Redmi 9 suddenly stopped responding to touch, the screen froze in one image and the buttons don’t work? This situation is familiar to many owners of budget Xiaomi smartphones, especially after 1-2 years of active use. The reasons for freezing can be different: from banal overheating to serious firmware errors. The main thing is not to panic and not to try to immediately remove the battery (which is physically impossible on Redmi 9 without disassembly).

In this article, we will look at all the working ways to reboot the Redmi 9, from the simplest to the most radical. You will learn how to distinguish a regular glitch from a hardware failure, when to contact the service, and how to prevent repeated freezes.

Important: If the phone is stuck during a firmware update (MIUI) or after installing a customized backup (TWRP), the algorithm will be different - read about this in a separate section. Nor do we consider cases where Redmi 9 does not turn on at all (black screen without reaction) - this is a topic for another instruction.

1.The reasons for the Xiaomi Redmi 9 freeze: why it happens

Before you reboot the device, it's helpful to understand what exactly caused the failure.-5 The reasons why Redmi 9 might freeze:

• 🔥 CPU overheating.MediaTek Helio G80 Redmi 9 is prone to trottling at high loads (games, video shooting) 4K, Multitasking: If the phone is hotter than 60°C, the system can "hang" to protect.
• 📱 Lack of RAM, but not enough RAM. 3-4 GB RAM (depending on the modification) Redmi 9 It starts to slow down when it is open at the same time. 10+ Especially critical for versions of 3 GB RAM.
• 🔄 Firmware errors. Failures in MIUI 12/13/14 (custom firmware such as Pixel Experience can lead to “eternal loading” or getting stuck on the Xiaomi logo.
• 💾 Storage problems: If the internal memory (eMMC 5.1) is filled to 90%+, The system starts to glitches, and damaged sectors can also be to blame (especially after falls).
• 🔋 Power failures: A discharged battery (below 5%) or a faulty charging controller sometimes cause a "false" freeze when the phone appears dead, but in reality just doesn't have enough power to start up.

One case is when you freeze after a drop or get moisture, and reboot can help temporarily, but the problem will come back, and if the phone falls or gets wet, you should bring it to the service right away, because the corrosion on the board progresses over time.

⚠️ WARNING: If the Redmi 9 got stuck while firmware is running through Fastboot or Recovery, don't remove the battery and hold the power button for longer than 20 seconds - this can turn the phone into a "brick."Use the methods from Section 5.

Method 1: Soft reboot (if the screen reacts)

If the phone is frozen, but the screen is still displaying the image (albeit static), and the sensor is partially responsive to touch, try a soft restart. This method is data-safe and works 60 percent of the time.

Instructions:

1. Hold the power button (right) for 10-15 seconds until the off menu appears.
2. If the menu doesn't appear, but the screen goes out and lights up again, release the button. The phone needs to reboot.
3. If the menu appears, select Restart and confirm.

If the power button doesn’t work (for example, after a fall), try an alternative method:

• 🔘 Connect your phone to charging (preferably the original Xiaomi adapter) 18W).
• 🔄 Through 5-10 Try unlocking the screen for a minute – sometimes charging “wakes up” the system.

A soft reboot works if the freeze is caused by a software failure (e.g., an application error).If the cause is hardware (overheating, memory damage), this method will not help.

Method 2: Forced reset (hard reset)

If the soft restart doesn’t work and the screen doesn’t respond at all, a forced reboot will be required, a technique that simulates battery extraction (which can’t be removed without disassembling on the Redmi 9).

Algorithm of action:

1. Hold the power button + volume button at the same time.
2. Hold them for 15-20 seconds until the screen goes out and vibration starts (a sign of a reboot).
3. Release the buttons when the Xiaomi logo appears.

If the phone doesn't respond:

• 🔋 Check if the battery is discharged (plug it into charging for 10 minutes, then try again).
• 🔌 Try another charger – sometimes a failure is caused by a power shortage.
• 🌡️ If the phone is hot, let it cool. 15-20 minutes before rebooting.

⚠️ Warning: Don't hold the buttons for longer than 30 seconds - this can trigger Fastboot mode (black screen with a rabbit and the words Fastboot mode). If this happens, just re-hold the power button for 10 seconds to exit.

After a forced reboot, the phone can boot longer than usual (up to 2-3 minutes). If the MI logo is burning for more than 5 minutes, move on to the next method.

Check the charge level (minimum 10%)

Turn off all cables (charging, headphones)

Make sure the buttons don’t stick (especially after a fall)

Wait 1 minute after restarting before trying again-->

Method 3: Reboot with Recovery Mode

If the phone is stuck on the Xiaomi logo or cyclically restarts (bootloop), logging into Recovery Mode will help. This mode allows you to restart the device bypassing the main system.

How to Sign In to Recovery on Redmi 9:

1. Turn off the phone (hold the power button for 10+ seconds if it doesn’t turn off).
2. Press the power button + volume button.
3. Hold them until the MI logo appears, then let them go.
4. After 5-10 seconds, you will see the Recovery menu (in English or Chinese).

On the Recovery menu:

• 🔄 Choose Reboot. → Reboot to System for a regular reboot.
• 🧹 If the phone still doesn’t boot, select Wipe Data. → Wipe All Data (this will reset all settings and delete data!).
• 📥 If the problem is after the update, select Apply update. → Choose from sdcard and install the firmware again.

Warning: Wipe Data will delete all user data (photos, apps, settings) only if other methods have failed and you have a backup.

💡

If the menu is in Chinese, focus on the icons: 🔄 — restart, 🧹 — discharge, 📥 — update.

5. Method 4: Reboot via Fastboot (for advanced)

If the phone is stuck in Fastboot mode or doesn’t respond to other methods, you can restart it via your computer, which requires Xiaomi drivers and Mi Flash Tool or ADB.

Instructions:

1. Download and install the Mi Flash Tool (the official tool from Xiaomi).
2. Press the power button + volume reduction for 10 seconds on your phone to log into the Fastboot.

If the team doesn’t work, try:

• 🔌 Use the other USB-port (preferably) USB 2.0 on the back of the PC).
• 🔄 Reinstall Xiaomi drivers via Mi Flash Tool.
• 📋 Check if the phone is detected in Device Manager (should be displayed as Android Bootloader Interface).

⚠️ Warning: Do not use fastboot erase or fastboot flash commands without understanding the consequences - this can permanently delete data or turn your phone into a brick».

If the phone freezes again after restarting via Fastboot, the problem may be in the damaged firmware, in which case you will need a complete firmware reflash (instructions are available on the official Xiaomi website in the Unlock & Flash section).

6. Method 5: Hardware reset (if nothing helps)

If all the previous methods didn't work, there's a hardware reset, which is to return the phone to factory settings, which will delete all the data, but bring the device back to life. There are two options on Redmi 9:

Option 1: Recovery (if the phone is turned on)

1. Enter Recovery Mode (Power button + Volume increase).
2. Choose Wipe Data → Wipe All Data.
3. Confirm the action (it may be necessary to enter a password if it was set).
4. After reset, select Reboot to System.

Option 2: via Fastboot (if the phone is not turned on)

1. Connect your phone to your PC and log in to Fastboot (Power button + Volume down).
2. In the command line, run: fastboot erase userdata fastboot erase cache fastboot reboot

After the hardware reset, the phone will be like new — you will have to reconfigure MIUI, restore contacts from Mi Account and install applications. Check in advance if your Xiaomi account is linked to the phone — this will make it easier to restore data.

⚠️ Warning: If the phone is resetting, it may indicate damage to internal memory (eMMC) and only a replacement chip at the service center will help.

💡

Hardware reset is the last chance to bring the phone back to life, but it deletes all the data.Always try to copy important files through Recovery first.

7.How to prevent hanging in the future

To prevent Redmi 9 from hanging up again, follow these guidelines:

• 📉 Control memory load: Close background applications (use Security) → Optimization in MIUI). Remove unnecessary programs.
• 🔥 Watch the temperature: Do not play heavy games (such as Genshin Impact) for more than 30 minutes in a row.
• 🔄 Update the firmware: Install the latest version MIUI through settings → The phone. → System updates: Avoid custom firmware unless you are sure it's stable.
• 💾 Clean the cache: Once a month, clean the cache through Settings → Warehouse → Clear the app cache.
• 🔋 Monitor the battery: If the phone is turned off 20-30% Replace the battery – unstable power supply causes failures.

It is also useful to disable unnecessary functions:

• 📡 Auto-update apps in Google Play (can slow down the background).
• 🎯 Interface animation (enable Developer Mode and turn off animation in Settings) → Additionally).
• 📊 Background activity for unnecessary applications (permissions in Settings) → Annexes).

If the freezes are repeated more than 1 time per month, it is worth checking the phone in the service - perhaps the problem is the wear of internal memory or the tracking module (for example, after a fall).

8. Frequent Questions (FAQ)