Verykool i600 - Manual (Page 39)

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IMPORTANT INFORMATION
Use of Passwords
Your mobile phone and SIM card have various passwords. Those
passwords prevent unauthorized use of your phone and SIM card. You
can change PIN, PIN2 and phone password in the “Settings > Security
Settings”.
Phone Code
The Phone code can be used to avoid unauthorized use of your phone.
The factory setting for the phone code is 1122. If phone lock is enabled,
you will be asked to input the phone password when you switch on your
phone.
PIN (4 to 8 digits)
The PIN (Personal Identification Number) code protects your SIM card
from unauthorized use. The PIN code is usually supplied with the SIM
card. When the PIN code request is enabled, you will be asked for the
password every time the phone gets turned on.
If you enter incorrect PIN three times, the SIM card will be locked and
you will need to use the PUK to unlock it. PUK is usually set by the
network operator.
1. Enter the correct PUK to unlock the SIM card, and then enter the
new PIN and press OK.
2. If you are prompted to enter the new PIN again, enter it and press
OK.
3. If the PUK is correct, the SIM card will be unlocked and the PIN will
be reset.
PUK (8 digits)
The PUK (Personal Unblocking Key) code is required to change a
blocked PIN code. Please contact your network operator for the code.