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If there are three consecutive input errors, your SIM card will
be locked up by the network, the phone will inquire PUK code.
Note: Your service provider will set up a standard PIN (4 to 8 digits)
number for your SIM card; you should change it into your private
password as soon as possible. PUK code will be provided by the
network provider.
Phone lock
The phone lock protects your phone from unauthorized use.
The default phone lock code is 0000. You can change it into
any numeric string of 4 to 8 digits.
If the phone lock function is enabled, you need to enter the
correct phone lock code when the phone is powered on or in
the standby mode.
Locking the Keypad
To unlock the keypad, press Left function key (Unlock) and *
