How to find my mobile's security code? read ahead?

I changed my sim card(duplicate--same no. as old) .Old sim card got lost

Now the handset is asking for

security code?I don't remember it

How to find my security code without spending money and on my

ownHow to find my mobile%26039;s security code? read ahead?
call the company and they can tell you how to reset itHow to find my mobile%26039;s security code? read ahead?
depends who made the phone. if it's nokia and you haven't changed the security code, try 000000 or 12345.



if it's a motorola, you can use pk tools to find out the code from the seem it's stored in.



a little more info would be helpful.How to find my mobile%26039;s security code? read ahead?
try 0000, the last four digits of your phone , or the last four of your social security , or maybe the month and day of your birthday EX: for Nov. 24 you would put 1124. if none of these work you will have to call your cell phone service provider (611).