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use PUK (Personal Unblocking Key) code. To
change the locked PIN2 code, you need to use
PUK2 code. If these two codes are not provided
together with the SIM cards, ask the local service
provider for them.
Warning: If the PIN code is input wrongly for
successively three times, the SIM card will be
locked. Please contact the network operator
immediately for help. Attempt to unlock the code
may make the SIM card ineffective forever!
4. General Instructions
Dial key
It is used to dial a call (with phone number
entered or in phonebook state) or receive an
incoming call. In standby state, press this key to
display the latest call register (SIM1 and SIM2
support respectively 20 call entries, including
received calls, missed calls and dialed calls). In
dual-SIM standby mode, press this key to have an
option menu on which you can choose to operate
via SIM1 or via SIM2.