What to do if the screen of the REDMI Note 9S goes black?

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Accepted Answer

If the screen of the REDMI Note 9S goes black, please refer to the following troubleshooting steps:
1. Restart the phone. Press and hold the power button for 10-15 seconds to force a reboot. This can fix temporary software glitches.
2. Ensure the battery is not drained. Connect the phone to a charger and wait a few minutes.
3. Inspect the screen for cracks or liquid exposure that could affect the display.
4. Take off any screen protector, which could affect touch response or the display.
5. Boot into Safe mode. If possible, check whether a recently installed app is causing the issue.
6. Please try entering Recovery mode. If you can successfully enter Recovery Mode, you can try clearing the data. Please note that data cannot be backed up in Recovery mode, and all data will be permanently deleted after clearing.
7. If the issue persists, please contact the local official after-sales service center for further assistance.