Solutions:
1. First of all, it is necessary to confirm whether there are cracks in the mobile phone screen or artificial damage such as water (manual damage is suggested to be inspected in after-sales center).
2, if there is a connection failure charger or power supply, if the power supply in this problem, it is usually due to voltage instability caused by charging or didn't use the original adapter, it is recommended to use when charging millet original cable and charger, and choose a relatively stable environment for charging voltage and try again.
3. Whether the screen is not sensitive only when operating a certain application, if so, there may be an application (game data abnormal, incompatible situation, it is recommended to uninstall the application after trying.
If it is confirmed to be a problem of the app, it is suggested to download and install the app in the Xiaomi app store or find the app in the MI App store to submit problem feedback; If there are any problems with the apps that are not downloaded and installed in the Xiaomi app store, it is suggested to contact the app developer by one's own.
4. If there are water stains or sweat on fingers (after playing a ball, just after exercise, etc.), if there are, please wipe fingers or the screen before trying to operate.
5. Whether to use non-original film, if so, it is recommended to try after removing it.
6. Enter the hardware detection mode "Touch screen test", the specific operation steps are as follows:
A. enter the mobile phone dialing interface input #*#6484#*#*or *#*#64663#*# to enter the hardware detection (CIT mode);
B. Slide up and down to enter the "Touch screen test", and slide finger on the screen to test the touch screen to see whether there are broken lines in the sliding lines and whether there are extra lines in the non-sliding area.
