User's Manual

17
Chapter 3 Trouble shooting
Failure
Reason
Can’t switch
on
1
?
The battery has been run out;
2
?
The battery isn’t installed properly.
SIM card error
1
?
SIM card is dirty. Clean the SIM card.
2? Re-install the SIM card.
3? SIM card is damaged. Please change a
new one.
4? (SIM2 is same)
Weak signal
Check the icon of signal strength, where four
strips indicate the strongest signal and two or
less strips indicate weak signal.
(SIM2 is same)
Can’t make
calls
(I) You have set to hide your own number, but
the network operator doesn’t support this
service.
(II). The ambient has strong interference.
(III). You have enabled call barring.
(IV). You have activated Line 2, but the
network operator doesn’t support this service.
Can’t charge
the battery
(I). The battery may be over discharged and it
takes a while to charge after connected to the
charger.
(II) Battery performance has decreased.
Can’t connect
to network
(I). The signal is too weak, or there is radio
interference.
(II). Check whether the SIM card is installed
properly, whether the contact is poor or
whether the card is damaged? Please contact
your network operator if the SIM card is
damaged.
The photos
taken are too
dark
(I) The brightness is too low;
(II) The environment is too dark