160
Problem
Possible causes
Possible solution
PIN Code
blocked
You have entered an
incorrect PIN code three
consecutive times.
Contact your service
provider. If the service
provider provides the
nano-SIM card’s PUK code,
use the PUK code to unlock
the nano-SIM card.
Phone
crashes,
reboots,
freeze, or
cannot be
powered on
Some third-party software is
not compatible with your
phone.
Uninstall the software that
may cause the problem.
Upgrade the phone
software.
Reset the phone to factory
status.
Summary of Contents for GRAND X4
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