138
Problem
Possible causes
Possible solution
Unable to
connect to the
network
The nano-SIM card is
invalid.
Contact your service
provider.
You are not within the
network’s service area.
Check the service area with
your service provider.
The signal is poor.
Move to an open space, or if
you are inside a building,
move closer to a window.
Cannot make
outgoing calls
You have activated the
Fixed dialing numbers
feature.
Disable this feature. See
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.