| | Unlocking an old phone
Hi, this may have been covered before so apologies if so. Currently trying to unlock an old phone. I have the codes but do not have a sim card which is a different service provider to my current one. To unlock a phone I believe you need to use a different sim service provider, for example O2 or Vodaphone. My question is can you use a pay-as-you-go sim card to unlock a phone which was on a contract? I do not want to pay for a pay-as-you-go sim card if it isn't going to be of any use.