All you need to do is press and hold the power button for at least 20-30 seconds. It's going to feel like a long time, but keep holding it until the device powers off. Samsung devices have a slightly quicker method. Press and hold the volume down key and the power/side key for seven seconds. Samsung.
Plug-in any other good Touch Screen and Check. This step is to verify whether the problem is in hardware or Xiaomi Mi 9 touch screen is faulty. If the problem is in hardware then clean touch onboard connector and check. Gently heat surrounding components of touch screen and check. Re-solder each pin of the touch connector and check.
Here Are The Steps To Repair Xiaomi Redmi 8 Touch Screen Problems: 1. Touchscreen Calibration For this way can be Do if the phone Xiaomi Redmi 8 you experience touch error or in a certain 2. Clean The Touchscreen Socket Repair Xiaomi Redmi 8Touchscreen Problem Or Ghost Touch This socket cleanup
Allow "USB debugging" in the pop-up window. (You may not see a window pop up if this is not the first time you have connected your device). Click "Cable" in AirDroid Cast desktop client and select your device. Once the connection is established, the screen of your phone will be displayed on the PC.
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redmi 8 touch screen not working