Secret codes for Motorola BRAVO MB520

Secret codes for Motorola BRAVO MB520

*#304*19980722# Set ON engineering mode

*#307# OK Engineering test mode

*#311# OK Phone code changed to default code

*#402# OK Adjust display intensity/ contrast

*#06# Display imei

*#300# OK List the software and hardware version

*#301# OK Full keypads functional test

*#303# OK Set default language to english

*#304# OK Set OFF engineering mode

*#403# OK List the manufacturing informations
*#3370# Enhanced full rate

*#0000# OK Settings saved, restore set phone to default language

19980722 OK Master unlock code for phone and simlock

*#302# OK Accoustict test

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