159
Problem
Possible causes
Possible solution
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.
Change your location to one
where the network is
accessible, or temporarily
turn off your phone.
Cannot turn
your phone on
Battery power has been
depleted.
Recharge the phone’s
battery.
nano-SIM card
error
nano-SIM card malfunction
or damage.
Take the nano-SIM card to
your service provider for
testing.
nano-SIM card inserted
improperly.
Insert the nano-SIM card
properly.
Debris on the nano-SIM
card contacts.
Use a soft, dry cloth to clean
the nano-SIM card contacts.
Unable to
connect to the
network
nano-SIM card 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 answer
incoming calls
You have activated the
Call
barring
feature.
Disable this feature. See
Cannot make
outgoing calls
You have activated the
Call
barring
feature.
Disable this feature. See