User's Manual

15
Model GT-4C
Nominal voltage 3.7v
Nominal 4.2v
Capacity rating 800mAh
Continuous standby time * 250-400hrs
Continuous calling time 3-5hrs
* Depending on the network
Operation Temperature -10~+50 °C
11. Trouble shooting
If anything unusual occurs while using your mobile phone, please refer to the following table.
Frequently
Occurring Problems
Cause How to Fix
Poor
reception
Using the mobile phone in
an area with poor reception such as
near tall buildings or in a basement
where radio waves cannot be
transmitted.
Try to avoid.
Using the mobile phone
when the network is busy, such as
during rush hour, when the lines are
full making it impossible to get
through.
Try to avoid.