Huawei U2800A User Manual page 3

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Mobile Care . . . . . . . . . . . . . . . . . 18
Data Balance . . . . . . . . . . . . . . . . 18
11 Settings . . . . . . . . . . . . . . . . . . . . 19
Lock . . . . . . . . . . . . . . . . . . . . . . . 19
PIN and PUK . . . . . . . . . . . . . . . . 19
Locking the Keypad . . . . . . . . . . . 20
Adjusting the Volume . . . . . . . . . 20
12 TTY Operation . . . . . . . . . . . . . . 22
Using TTY . . . . . . . . . . . . . . . . . . . 22
Setting the TTY Mode . . . . . . . . . 22

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