Lock code IMIE 356406010441953

SIM Pin Code.
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset. ---
To reset this Pin number you need the:
Pin Unlock Code (PUK)
If you miss keyed (or forget) your SIM PIN code, and enter the wrong one 3-5 times in a row, the sim will lock up, and you'll need to enter the unlock code to release it. You should ask your Network Service Provider for this code when you need it. Don't try to guess it, because after a few wrong guesses, the SIM card will be permanently disabled.

Phone Security Code:
This locks the handset, as opposed to the sim card. You can also set some handsets to only accept a "new" sim if the phone security code is entered.
To reset this Security number you need the:
Master Reset Code
Sometimes known as the Master Code, this allows you to unlock a handset if you have entered the Security
Code wrongly too many times.
For IMEI 356404010441953 this is the Master Code:
3520316615 to use it:
You type in the security codes (any) until the phone request the Master code; when it does, leave your phone still, don't use it for 15 minutes, then type in the Master code.