11
PIN and PUK
Personal identification number (PIN) code helps effectively prevent unauthorized use
of your SIM card. Personal unblocking key (PUK) code helps change the locked PIN
code. If you enter the wrong PIN code for three times, your SIM card will be locked.
In this case, you need to enter the PUK code to unblock the locked PIN code. Please
note that if you enter the wrong PUK code for ten times, your SIM card will be
permanently locked, you need to consult your service provider to replace your SIM
card. PIN code and PUK code are provided together with the SIM card. For details,
consult your service provider.
10
FAQs
If problems occur during the use of the phone, refer to the following sections for a
proper solution. If a problem persists, contact your phone vendor.
What can I do if F688 cannot be powered on?
1.
Remove the battery cover and check whether the battery is installed properly.
2.
If the battery is properly installed, a possible cause for the problem is that the
battery power is low. Charge the battery, and then try to power on the phone.
What can I do if no information is displayed on the
screen?
If the phone is not used for a long time and the battery runs out of power, the phone
may not display any information when it is being charged. This is a normal
phenomenon. The phone can be powered on after the battery is charged for a while.
What can I do if battery cannot be charged?
1.
Check that the handset is properly connected to the base.
2.
Check that the base and the power adapter are connected properly.
3.
Check that the power adapter and the power socket are connected properly.
4.
Replace the power adapter or the battery with a new one of the same model.
What can I do if the signal reception is poor?
1.
Check that the SIM card is installed properly.
2.
Place the phone at a location where strong signals can be received.
Summary of Contents for F362
Page 1: ...F688 User Guide ...
