125
Problem
Possible causes
Possible solution
Cannot
turn your
phone on
Battery power has been
depleted.
Recharge the phone’s battery.
Nano-SIM
card error
The nano-SIM card has
malfunctioned or is damaged.
Take the nano-SIM card to your
service provider for testing.
The nano-SIM card is inserted
improperly.
Insert the nano-SIM card
properly.
Debris is on the nano-SIM card
contacts.
Use a soft, dry cloth to clean
the nano-SIM card contacts.
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.
Poor signal.
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 Phone Calls – Adjusting
Your Call Settings – Using Fixed
Dialing Numbers.
PIN Code
blocked
You have entered an incorrect
PIN code three consecutive
times.
Contact your service provider.
Phone
crashes,
reboots,
freezes, or
cannot be
powered on
Some third-party software
is not compatible with your
phone.
Reset the phone to factory
status.
Uninstall the software that may
be causing the problem.
Upgrade the phone software.
TROUBLESHOOTING
Summary of Contents for AT&T Maven 3
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