Grupo Sefton Tecnology SEFTONS450 Manuale Utente

 

 62

gold part of SIM card, then insert SIM card again, if it still can’t be used, 

please contact your system supplier.   

¾  No network 

If you locate in the area that has no network coverage, or there is a 

physical obstruction between the transmitter and you, such as the 

hermetic space, the standby screen will show no network, you can’t dial 

or answer the phone. You can try to close the window where there is 

network coverage.   

¾  Emergency calls only 

When you locate out of the coverage range of your service network 

but can receive another network signal, you can only dial the emergency 
call and can’t call normally.   

 

¾  Invalid SIM card 

When your SIM card is locked or the SIM card is in error, please 

insert correct SIM card or contact your system supplier.   

¾  Input PUK code   

When your SIM card is locked because of three times of error PIN 

code input, the phone will ask you to input PUK code for unlocking. You 

should contact your system supplier to obtain the 8 digit PUK code.     

Warning: if you input an incorrect PUK code for seven times, your 

SIM card will be permanently locked. You should obtain a new SIM card 

from your system supplier.   



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