Nubia NX521J User Manual page 44

Silent mode: turn on/off silent mode.
Phone ringtone: set the default incoming call ringtone.
DTS: enhance sound effect when playing video, music, audio, and provide
complete entertainment experience.
Dial pad touch tones: play sound when touching dial pad.
Touch sounds: play sound when touching the screen.
Screen lock sound: play sound when locking the screen.
Vibrate on touch : vibrate when touching the buttons.
Power on sound: play sound when powering on your phone
Security & Location
Screen lock: select Slide, Pattern, PIN & Password to lock the screen.
Make passwords visible: after you select 'Make passwords visible', you can see
the password you are entering.
Set up SIM/RUIM card lock: after you select 'Lock SIM card', you need input a PIN
as you turn on the phone.
Location service: turn on/off GPS.
Device administrators: view or deactivate device administrators.
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