4.16 DEVELOPER OPTIONS
You can set desktop backup password, unlock the screen, the SD card read
and write protection, USB debugging and other different applications.
4.17 ABOUT PHONE
View phone‘s current signal, power, service status, the phone‘s software
and hardware information.
5. COMMON PROBLEMS & SOLUTIONS
Poor signal
1. Using the mobile phone in poor reception area, such as nearby buil-
dings or basement, the radio waves cannot effectively communicate;
Try to avoid
2. Using the mobile phone in the call dense period, such as commute time,
line congestion caused by the inability of the calls.
Try to avoid
3. Associated with the launch of the base station network built near and far
Can ask Internet service providers provides service area map
Echo or noise
1. Due to poor network trunk, is a regional problem
2. Some regional bad line
Hang up and redial, trunk lines may replace good one.
Standby time shorter
1. Standby time is related to the network system setting
39 40
T urn off the mobile phone in the poor reception area.
2. The battery need to replaced, please replace new battery.
Please replace new battery.
3. The phone will continue to search base station, it will use a lot of battery
power, causing the standby time become shorter.
Please move to strong signal place or turn off the phone.
Unable to boot
1. The battery power is exhausted.
Check the battery power or charge it.
SIM card error
1. SIM card is damaged
Contact your network service supplier.
2. SIM card not installed
Make sure SIM Card has been installed.
3. SIM card metal surface have dirt
Use clean cloth to brush the SIM card metal contact point
unable to connect the network
1. SIM card is invalid
Contact your network service supplier.
2. Beyond the GSM or 3G network service area
Ask your network service supplier the service area.
3. The signal is weak
Please move to the strong signal place to retry
