So to solve the Connection Problem or Invalid MMI Code issue, let’s reboot in safe mode. To reboot in safe mode or enter safe mode, follow these steps: Turn off your device. Press and hold the ...

These 5 possible methods will help you to solve your Android phone's Connection problem or invalid MMI Code issue in a jiffy.

The invalid MMI code error is a prominent problem for every Android smartphone. Here are 5 possible ways to solve that.