Zte Z716BL User Manual page 120

Problem
Cannot turn
your phone on
micro-SIM
card error
Unable to
connect to the
network
Cannot answer
incoming calls
Cannot make
outgoing calls
Possible causes
If you are not able to
connect to the network, the
phone will continue to send
out signals as it attempts to
locate a base station. Doing
so consumes battery power
and will consequently
shorten standby time.
Battery power has been
depleted.
micro-SIM card malfunction
or damage.
micro-SIM card inserted
improperly.
Debris on the micro-SIM
card contacts.
micro-SIM card invalid.
You are not within the
network's service area.
Poor signal.
You have activated the Call
barring feature.
You have activated the Call
barring feature.
Possible solution
Change your location to one
where the network is
accessible, or temporarily
turn off your phone.
Recharge the phone's
battery.
Take the micro-SIM card to
your service provider for
testing.
Insert the micro-SIM card
properly.
Use a soft, dry cloth to clean
the micro-SIM card
contacts.
Contact your service
provider.
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.
Disable this feature. See
Bar Certain
Disable this feature. See
Bar Certain
120
Calls.
Calls.