Zte AXON User Manual page 153

 Set up SIM/RUIM card lock:
Lock SIM card: Activate or deactivate the PIN lock

to require a PIN before accessing the nano-SIM
card.
Change SIM PIN: Change the PIN used to access

the nano-SIM card.
NOTE: Put all confidential passwords in a safe
 Make passwords visible: Display passwords as you
type them.
 Device administrators: View or deactivate apps
authorized as device administrators.
 Unknown sources: Check this option to permit
installation of apps from sources other than the Play
Store.
 Storage type: Check the credential storage type.
 Trusted credentials: Display trusted CA certificates.
 Install from SD card: Install certificates from the phone
internal storage.
 Clear credentials: Delete all certificates.
 Trust agents: View or deactivate trust agents.
place for future use. If you type the wrong
SIM PIN more times than allowed, the
nano-SIM card locks and prevents access
to the phone network. Contact the service
provider for a PIN Unlock Key (PUK) to
restore the nano-SIM card.
153