Huawei U3900 User Manual page 12

Press
Enter *, +, P or W when entering phone numbers.

Enable or disable the Vibration profile in standby

mode (press and hold the key for about 3
seconds). To configure the profile, select Menu >
Settings > Phone > Sound > Ringer Type.
Enter #.

Lock the keypad in standby mode (press and hold

the key for about 3 seconds).
Adjust the volume.

Turn the external screen on when the clamshell is

closed and the external screen is off.
To
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