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This tip is about the how to fix ‘Connection Problem or Invalid MMI Code’ Issue. So read this free guide, How to fix ‘Connection Problem or Invalid MMI Code’ Issue step by step. If you have query related to same article you may contact us.
How to fix ‘Connection Problem or Invalid MMI Code’ Issue – Guide
From time to time, you may get the error message “Connection problem” or “Invalid MMI code” on your Android device. This usually happens when a user tries to send human-machine interface code, also called MMI code. What is an MMI code you ask? It’s those funny codes you type into your dialing program that contain an asterisk phone or hash (#), such as #BAL on your Verizon Wireless phone to check your account balance, or sometimes it’s just a prefix code that you type before a
number. If the connection issue or invalid MMI code issue is driving you crazy, we have some solutions that should solve your problem.
Ways to Fix MMI Error
You can use the + symbol after * similar to this one (* + 2904 * 7 #).
Select restart.
You may have to log in again for another 3-4 attempts before it starts working again.
Final note
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