Sony Xperia A4 Instruction Manual page 169

Changing the PIN code
You can change only when you activate the
･
SIM card lock.
From the Home screen,
1
u
[Settings]
SIM card lock]
Enter the current PIN code
2
Enter a new PIN code
3
Enter the new PIN code
4
u
again [OK].
Unlocking PIN lock
Enter the PUK code
1
Enter a new PIN code
2
Enter the new PIN code again
3
Setting screen unlock method
You can enhance security by requiring a
screen unlock pattern every time the
terminal is turned on or every time it is
activated from sleep mode.
From the Home screen,
1
u
[Settings]
[Screen lock].
u u
[Security] [Set up
u
[Change SIM PIN].
u
[OK].
u
[OK].
u
.
u
.
u
u u
[Security]
Tap a unlock method to set.
2
When you tap [PIN], follow the
･
onscreen instructions to enter 4 - 16
digit numbers. This "PIN" code is
different from one to be set on a
docomo nano UIM card (P.166).
Locking the screen
P
When is pressed to turn on the sleep
mode or the screen backlight automatically
goes off after screen unlock method (P.167) is
set, the screen is locked.
To unlock the screen
■
When the screen is locked, press
1
P
to turn the backlight on
the unlock method.
.
To turn off the screen lock
■
From the Home screen,
1
u
[Settings]
u
n lock] Enter the current unlock
pattern/PIN/password
❖ Information
If you forget unlocking pattern/PIN/Password,
･
contact a docomo Shop.
u
Enter
u u
[Security] [Scree
u
[None].
Settings
167