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 power ...
Sometimes, a message saying “Connection problem or invalid MMI code” shows up and can be frustrating for Android users. When the invalid MMI code message appears, it generally means that you can’t ...
If you are an Econet subscriber you might have noticed that all USSD services are currently not working. Any attempt to use the network results in a pop up message about a “connection problem or ...
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