Operation Manual

9
phone needs to be connected to the
charger for a while before it can be
charged.
Fails to
register to
the
network
1. The signal is too weak, or there may be
some radio interference around. Check
the signal strength meter on the screen
to see whether vertical lines are
displayed.
2. Is the SIM card installed properly, poorly
contacted or damaged? If the SIM card
is damaged, please ask your network
operator for replacement.
Cannot call
out
1. Is the SIM card registered in the
network?
2. Is call barring enabled?
3. Calling prohibited due to call charges not
paid?
4. Have you enabled the function of FDN?
5. Have you selected line 2 though your
network operator doesn't provide this
service?
Cannot call
in
1. Is the SIM card registered in the
network?
2. Incoming call prohibited due to call
charges not paid?
3. Is call diverting enabled?
4. Is the "Bar incoming call" function in call
barring enabled?
PIN locked
Input the PUK code supplied with the SIM
card to unlock or contact the network
operator.
Call charge
meter
invalid
No metering pulse is transmitted. Please
contact your network operator.
SIM error
1. SIM card is dirty. Clean it.
2. Reinstall the SIM card.
3. SIM card is damaged. Replace it.
Appendix II Abbreviations and explanations
GSM Global System of Mobile Communication.
SIM Subscriber Identity Module.
PIN Personal Identity Number. Usually refers to PIN1. Supplied with SIM card. Used to
unlock the SIM card.
PUK Personal Unlock Code. Supplied with SIM card. It is used to unlock the SIM card if
you input wrong PIN code three times consecutively and the SIM card is locked. You
can also use it to modify PIN code.