#invalid mmi code

How To Fix “Connection Problem Or Invalid MMI Code” On Android Devices

Sometimes Android users run into the annoying message – “Connection problem or invalid MMI Code”. If you have been facing this issue lately and wondering how in the world to fix it, this post will provide 4 different solutions which you can use to get rid of “Connection problem or invalid MMI code” issue. It’s important to fix this problem because it virtually renders your phone useless – you…