Huawei U2800A User Manual page 3

PIN and PUK ................................................................... 12
Locking the Keypad ........................................................ 12
Adjusting the Volume ..................................................... 12
Setting the Date and Time .............................................. 13
9 TTY Operation ........................................................ 14
Using TTY ....................................................................... 14
Setting the TTY Mode ..................................................... 14
10 Settings ................................................................ 15
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