connection problem or invalid MMI Code,解决办法:重启模拟器即可.
There are several reasons why the “Connection problem or invalid MMI code” error message appears on your phone. The main reason is an issue with the carrier provider or problems with the SIM authentication on the smartphone. The error is quite common for phones with dual-SIM capabilities, bu...
4. Enter the Code in Safe Mode A malfunctioning third-party app might be the reason why you encounter the "Connection Problem or Invalid MMI Code" error. To test it, try entering the code in safe mode. Open the Quick Settings menu and tap on thePowericon. Then, tap and holdPower off...
A notification stating “Connection trouble or invalid MMI code” appears on occasion, which might be annoying for Android users. When the invalid MMI code notification occurs, it usually implies that you won’t be able to make calls or send texts until the problem is fixed. This usually happ...
The third-party apps running on your Android can disrupt network communications and lead to the “Connection problem or invalid MMI code” error. You can useyour phone in safe modeto check for this possibility. To boot your Android into safe mode: ...
Simply turn off your phone (press the Power button for a few seconds) and reboot again, see if that helps infixing the connection problemor invalid MMI code on your phone. This method 1 may sound simple, but sometimes that’s all it takes to get rid of the invalid MMI code error!