ZTE Corporation ZTEA15 Manuale Utente

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If you have selected a service provider manually, you have to manually select again or 

return to the Automatic option to select the service provider when you switch to the SIM 

card of another network.   

4.5.6 

Security Settings 

Security features protect you from illegal use of your phone and SIM card. 

Note: You need to input handset lock code to enter security settings interface. The default 

handset lock code is 1234. Please change it with your own private password as soon as 

possible. 

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SIM Password: SIM password (PIN code) can prevent your SIM card from illegal 

use. Select On/Off to enable or disable SIM password protection; select Change 

PIN to set a new PIN code.   

Note: Three consecutive times of wrong PIN code inputting will lock the SIM card. Then, 

the PUK code is needed to unlock the SIM card. The PIN code and the PUK code may be 

provided to you together with the SIM card. If not, please contact with your network 

service provider. The default PIN code is 1234. Please change it with your own private