Maxcom MM821 User Manual page 42

by pressing right button or # key.
Auto keypad lock:Can close or open an automatic lock
keyboard time.
Connectivity
Empty
Restore settings
Reset the phone. Default password is "1122"
FM
This phone support FM. You can answer calls as
usual while using FM. At that time, FM would mute
automatically. FM may be affected when other users
transmit files through GPRS or CSD.
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