9
KNIGHT
11
a stronger signal or
temporarily turn off your
mobile phone.
get a signal, the
phone will continue
to transmit in order
to find a base
station, thereby
consuming large
amounts of power
which will cause
the standby time
to decrease.
Look at the remaining
electricity or recharge status
to confirm. Charge battery.
The battery is
empty.
Unable to
turn on the
phone
Contact your network
provider.
SIM card is
damaged.
Confirm SIM card is
properly inserted.
Use a clean, dry cloth to
wipe off the metal contact
point of the SIM card.
SIM card is not
properly inserted.
There is visible dirt
on the metal
surface of the
SIM card.
SIM card
malfunction
Contact your network
provider.
Expired SIM card
Consult your network
provider regarding the
service area.
Please move to a place with
a stronger signal and try
again.
Outside the GSM
service area
Poor signal
Unable to
connect
with the
network
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