7. APPENDIX
Appendix1: Carry on the following simple examination before you contact
with after-sales service, perhaps can help you avoid the redundant main-
tenance time and expense to waste.
COMMON PROBLEMS AND SOLUTIONS
Unable to boot
1. Check whether the battery power is exhausted, please charge the
battery.
2. Check whether the battery is bad contact. Please remove it rst and
reinstall, then retry boot.
SIM card error
1. SIM card metal surface have dirt, use clean cloth to brush the SIM card
metal contact point.
2. Reinstall the SIM card. SIM card is damaged, please replace SIM card.
Poor signal
Check on the signal strength indicator of the screen, 5 bars indicate a
strong signal. Less than 2 bars indicate a weak signal
Unable to dial out
1. You may set to hide your phone number, but your network operator
does not provide the service.
2. Surrounding environment may have a strong interference signal
3. You may activate call barring function.
4. You may activate the line2, but your network operator does not provide
51 52
the service.
Unable to charge
1. Battery may have over-discharge, it need to connect the charger after a
period of time to charge
2. Battery performance have been worse
Unable to connect the network
1. The signal is weak, or around the radio interference.
2. SIM card is invalid, please contact with your network operator.
EXPLANATION OF TERMS
SMS Short Message Service
EMS Enhanced Message Service
SIM Subscriber Identity Module
GSM Global System for Mobile Communication
PIN Personal Identity Number
PUK PIN Unblocking Key
IMEI International Mobile Equipment Identity
