Zte AVID TRIO User Manual And Safety Information page 91

Problem Possible causes
The nano-SIM card
malfunctions or is damaged.
nano-SIM The nano-SIM card is inserted
card error improperly.
There is debris on the
nano-SIM card contacts.
The nano-SIM card is invalid. Contact your service provider.
Unable to You are not within the
network‟s service area.
connect to the
network
The signal is poor.
You have entered an incorrect
PIN Code
PIN code three consecutive
blocked
times.
Phone
crashes,
Some third-party software is
reboots,
not compatible with your
freeze, or
phone.
cannot be
powered on
Possible solution
Take the nano-SIM card to your service
provider for testing.
Insert the nano-SIM card properly.
Use a soft, dry cloth to clean the nano-SIM
card contacts.
Check the service area with your service
provider.
Move to an open space, or if you are inside
a building, move closer to a window.
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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