Pin Code; Personal Unblocking Key (Puk Code - Sony NTT Docomo Xperia GX SO-04D Instruction Manual

PIN code

You can set security code which named PIN
code to docomo mini UIM card. It is set
"0000" at the subscription. They can be
changed by yourself.
PIN code is a 4- to 8-digit number (code) that
must be entered for user confirmation to
prevent unauthorized use by a third party
every time you insert the docomo mini 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 mini UIM card you have been using
inserted, 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 "PUK". (P.141)

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 mini UIM card is
locked. Please contact a docomo Shop.
Enabling the docomo mini UIM card
PIN
By setting PIN (security code) and entering
PIN code when powered on, you can protect
the docomo mini UIM card from improper
use.
From the Settings screen (P.112),
1
tap [Security]
u
lock] [Lock SIM card].
Enter the PIN code of the docomo
2
mini UIM card and tap [OK].
[Lock SIM card] is marked.
Entering the PIN code when powered
on
On the PIN code entry screen,
1
enter the PIN code of the docomo
mini UIM card.
Tap [OK].
2
u
[Set up SIM card
Settings
141