Change Code (6-4-2); Audio Settings; Ring Volume (7-1); Ring Type (7-2) - Acer G520 User Manual

Off
Disable the SIM lock function. You need to enter the unlock
code to disable.

Change Code (6-4-2)

Change the unlock code. You need to enter the original unlock
code.
7

.7 Audio Settings

Ring Volume (7-1)

You can select the ring volume level here. Totally five levels are
available.

Ring Type (7-2)

You can choose the ring type of your phone from 5 ring types, 15
melodies and 2 vibration types (Vibration function is not available
in G625).

Keypad Tone (7-3)

You can control the on/off of your keypad tone by using this
function.

Alarm Type (7-4)

You can set the alarm type here (only available in G520 and
G620).
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