ZTE Corporation A139PLUS Manuale Utente

27 

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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. 

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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.： 

Enter Phone Lock——if a phone lock code has been set.   

Enter PIN  ——if a SIM card password has been set.   

Searching  ——search for the right network. 

After the SIM card and the phone are unlocked, the mobile phone will automatically