ZTE Corporation ZTEA137 Manuale Utente

25 

Connecting to the Network 

Don’t touch the metal contact area of the SIM card (Subscriber Identity Module 

card). Doing so may cause information in the card lost or destroyed. Keep the card 

away from electricity and magnetism.   

„ 

Switch off your phone, disconnect the outer power source and remove the battery. 

Warning: It is forbidden to insert or remove the SIM card when it is on or 

connected to an outer power source. 

„ 

Insert the SIM card into the SIM card slot or pull it out from the slot. 

Hold the End key to power on/off the phone. 

The mobile phone will automatically test whether the SIM card is plugged in and 

valid after power on, then the following messages will be displayed on the screen 

sequentially.：