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7. Appendix I
Troubleshooting
Trouble
Possible reason and solution
The phone can’t be switched
on
The batter has no electricity.
The battery is installed wrongly.
SIM card error
SIM card is dirty. You should clean it.
Reinstall SIM card
SIM card is damaged. You should change a new one.
(it is the same for SIM card 2)
Poor signal
Check signal strength mark on the screen. The signal is strong if there are 5 cases, while
it is poor if there are only 2 cases or less.
(it is the same for the signal strength of SIM card 2)
No call can be dialed out.
(I) You may select Hid My Number, but your network supplier doesn’t supply this
service.
(II) There may be strong interfering signal around.
(III) You may activate call barring function.
(IV). You may activate line 2, but your network supplier doesn’t supply this service.
The batter fails to charge
(I) The battery may discharge overly. It can charge after a short while connecting with
charger.
(II) The battery is bad.
There is no network
(I) The signal is too weak or there is wireless interference.
(II) SIM card is not installed correctly. The connection is bad or SIM card is damaged.
Please consult your network operator if the SIM card is damaged.
The shot photo is too dark
(I) The brightness sets too low.
(II) The environment light is too dark.
The shot photo is unclear
(I) The shot object is moving.
(II) The phone shakes slightly when you pressing the shutter.
The shot photo distorts.
The shot object is too close to the camera lens.
39


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