Zte A16 User Manual page 48

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. Please change it with your own private password as
soon as possible.
Handset Lock: Handset Lock can prevent your mobile phone from unauthorized
use. Select On/Off to enable or disable the handset lock protection; select Change
Code to set a new handset lock code.
Note: The default handset lock code is 1234.
Network Call Bar: You can set any combination of the following call restriction
options to improve security level. Please contact with the network service provider
for detailed use. The network service provider provides a 4-digit network password
to enable your call restrictions.
International Call: Bar all international calls.
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