Operation Manual

Class User Manual
39
Troubleshooting
Troubleshooting
Problems
Possible Causes
Unable to switch on
1. Does the battery have enough electrical power?
2. Is the battery placed correctly?
SIM failure
1. The SIM card is dirty. Clean it.
2. Reinstall the SIM card.
3. The SIM card is damaged. Replace it.
Poor signal
Check the signal strength icon on the screen. If the icon contains 4 bars, the
signal is at its strongest; if it is below 1 bars, the signal is very poor.
Unable to dial out
1. Maybe you have set Hide My Caller ID but your network operator
does not provide this service for you.
2. There are lots of interference sources in your neighborhood.
3. Maybe you have activated some call restriction function.
Unable to charge the battery
1. The battery may be over-discharged; so it requires a longer charging
period than normal.
2. Its performance has got worse; it is necessary to replace the
battery.
Unable to register to the network
1. Too weak signals or strong interferences.
2. SIM card not properly installed. Bad contact or SIM card damaged. If
the SIM card is broken, please contact the network operator to
replace it.
Photos taken are too dark
1. Brightness is set too low.
2. Ambient light is poor.
Photos taken are unclear
1. Check if your subject is moving too fast.
2. Maybe the phone slightly moved while the shutter was open.
Photos taken are distorted
The subject may be too close for the camera lens.
Service menu is not accessible
Maybe your SIM card doesn't support Services function.
The picture selected as wallpaper is only
partially visible
The size of the photo is probably too large. The recommended size is
320x240.
Abbreviations
SMS
Short Message Service
MMS
Multimedia 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