Instructions and settings to perform if touch panel is not working
TOUCH PANEL NOT WORKING:
1. Please reboot the phone once to check if it helps. If options on the screen cannot be selected, perform a hard reboot by long pressing the power button for a few seconds until it reboots.
2. Check if the phone has any tempered glass or screen protector. Advise to remove it and see if the touchscreen is working.
3. Ask if the customer is using any gloves, or anything that is covering the fingers, as the display will be non-responsive in such cases.
4. If hands are wet, touch screen will not respond
5. Certain Non-Xiaomi chargers / cables when connected may make the screen non-responsive or frozen due to possible current leak. This can also happen when the wall socket has not been grounded properly.
6. Check if this problem is observed only when charger / cable is connected. If this is the case, ask customer to charge using a Xiaomi original charger & cable &/or on a different wall socket.
7.. If the screen is partially not responding or not responding only at certain areas on the display, try to perform hardware test and check if the test is successful. Open Phone dialer and press *#*#6484#*#* to enter hardware test and select ‘Touch Sensor’ or ‘Touchpanel’
8. If the HW test fails, ask the customer to visit the ASC nearby and advise to take a full back of the device on his computer or any external storage device before visiting the Service centre
This resolution is based on miui12 for miui11 click here
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