Every time itry to inseart other sim it shows enter sim lock coad and i forgot it

Check whether the SIM CARD slot is working properly by insearting a different sim card if doesn't work then your sim card slot is corrupted...

my problam is my sim locked my cell 07424756056 puk coad pleas my hellp

still have the password when i open my phone please help me gt-e2222 samsung

try to type 0000

USER UNLOCK COAD SUMSUNG SGH569

call the customer care and get ur puk number...!!!!now enter the puk number instead of the sim lock code.....actually when u enter wrong code for more than 5 times it ll automaticall ask u the puk number.,....in this tab enter ur puk value!

I cannot use other simpack/card becaude i forgot the security code

my scurity code eror, help me new scurity code

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 it, you need the PUK code:
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.

pin coad blocked 2310