Sony Xperia A4 Instruction Manual page 168

15.5
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PIN code
You can set up a security code called a PIN
code for your docomo nano UIM card. The
code is set to "0000" at the time of
subscription; however, you can change the
code by yourself.
PIN code is a 4- to 8-digit security number
(code) that must be entered for user
confirmation to prevent unauthorized use
of docomo nano UIM card by a third party
every time you insert the docomo nano UIM
card into the terminal or when the terminal
is powered on. Entering the PIN code
enables making/receiving calls and
terminal operation.
If you use a newly purchased terminal
with docomo nano UIM card you have
been using, use the PIN code set on the
former terminal. If you did not change the
setting, the code is "0000".
If you enter a wrong PIN code 3 times
consecutively, the PIN code is locked and
cannot be used anymore. In this case,
unlock with "Personal Unblocking Key
(PUK code)" (P.166).
Personal Unblocking Key (PUK code)
The PUK code is an 8-digit number for
canceling the locked PIN code. The PUK
code cannot be changed by yourself.
If you failed to enter PUK code 10 times
consecutively, the docomo nano UIM
card is locked. Please contact a docomo
Shop.
Enabling SIM card lock
By entering PIN code when powered on, you
can protect from improper use.
From the Home screen,
1
u
[Settings]
SIM card lock]
Enter PIN code
2
Entering the PIN code when powered
on
On the PIN code entry screen,
1
enter the PIN code.
.
2
u
u
[Security]
[Set up
u
[Lock SIM card].
u
[OK].
Settings
166

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