Motorola V3xx Instruction Manual page 55

To manually lock your phone:
Press s > w Settings > Security > Phone Lock
> Lock Now.
To automatically lock your phone whenever
you turn it off: Press s > w Settings > Security
> Phone Lock > Automatic Lock > On.
Note: You can make emergency calls on a
locked phone (see page 62). A locked phone
still rings or vibrates for incoming calls or
messages, but you need to unlock it to
answer.
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