Zte Z777 User Manual page 102

Problem
You cannot
make
outgoing
calls.
PIN Code
blocked
Unable to
enter
information
into the
phonebook
Phone
crashes,
reboots,
freeze, or
cannot be
Possible causes
You have activated the
Call barring feature.
You have activated the
Fixed dial numbers
feature.
You have entered an
incorrect PIN code three
consecutive times.
The phonebook's
memory is already full.
Some third-party
software is not
compatible with your
phone.
Possible solution
Go to Call Barring
Settings, and then
select Deactive All.
Go to Fixed Dialing
Numbers and disable it.
Contact your service
provider. If the service
provider provides the
micro-SIM card's PUK
code, use the PUK code
to unlock the micro-SIM
card.
Delete unnecessary
data from the contacts.
Uninstall the software
that may cause the
problem.
Upgrade the phone
software.
102