Fourth, the phone can not unlock

 

Is not insert a new SIM card ? If yes, please enter a new PIN. Is not the use of alternate phone ? Enter the default phone unlock codes.

 

  Five , SIM card does not work

 

SIM card is inserted in the correct position ? Re-inserted once. Gold cards are significantly damaged or scratched ? Be sure to double-check when purchasing from service providers , some of this time should be picky . Check the SIM and phone electrodes. If you do not clean with an anti-static cloth.

 

Sixth, the battery is not charging : charger is properly connected

 

Battery electrodes. Is clean and dry ? Battery temperature is too high ? Charging should be preceded by natural cooling . Is not the old battery ? After years of use , the battery performance is reduced , replace the battery .

 

Seven, the battery faster than normal consumption

 

Phone is in a poor coverage area ? It uses more power. All antennas are stretched ? It uses less power , is not a new battery ? All new batteries require several charge / discharge process , in order to achieve optimal performance. The battery is fully discharged ? Let the battery fully discharge ( until the phone is switched off automatically ) , and then charging overnight. Check the battery saving mode function settings. Whether to use the phone in extreme temperatures ? Temperature is too high or too low, the battery performance will be greatly reduced .

 

Eight , you can not cancel the call forwarding or call barring

 

Wait until the network is located in a good coverage area and try again.

 

Nine , can not dial international calls issued

 

Some service providers feature automatically prohibit appropriation of international calls. Please contact your service provider. If coupled with a corresponding code ? Available international dialing prefix ( + ) , and then enter the appropriate country code and phone number , dial international calls hair .

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