Zte Z917VL User Manual page 123

Problem
PIN Code
blocked
Phone
crashes,
reboots,
freeze, or
cannot be
powered on
Possible causes
You have entered an
incorrect PIN code three
consecutive times.
Some third-party
software is not
compatible with your
phone.
Possible solution
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.
Uninstall the software
that may cause the
problem.
Upgrade the phone
software.
Reset the phone to
factory status.
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