ZTE Grand X In Bedienungsanleitung Seite 320

Cannot
switch your
phone on
(U)SIM card
error
Unable to
connect to
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.
(U)SIM card malfunction
or damage.
(U)SIM card inserted
improperly.
Debris on the (U)SIM
card contacts.
(U)SIM card invalid.
Change your location to
one where the network
is accessible, or
temporarily turn off your
phone.
Recharge the phone's
battery.
Take the (U)SIM card to
your service provider for
testing.
Insert the (U)SIM card
properly.
Use a soft, dry cloth to
clean the (U)SIM card
contacts.
Contact your service
provider.
320