i found a phone, figured out the 4 digit lock code and unlocked it. its a phone for

bell. can i use it now?
like now can i add a plan? or add a phone card?

Did you forget security code password of your mobile? If yes, what’s your mobile manufacturer and model? To reset your phone, use Master reset code. You can get it from any of the online vendors like Unlock-Free.com. Here, they provide code for old model Nokia DCT and Alcatel phones.If you want to add a plan or card, you have to contact your carrier .