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Problem Possible causes Possible solution
You have activated the Fixed
dial numbers feature.
Go to Settings >
Call > Fixed Dialing
Numbers and
disable it.
PIN Code
blocked
You have entered an
incorrect PIN code three
consecutive times.
Contact your service
provider. If the
service provider
provides the (U)SIM
card’s PUK code,
use the PUK code
to unlock the (U)SIM
card.
Unable
to enter
information
into the
phone book
The phone book’s memory is
already full.
Delete unnecessary
data from the
contacts.