Hey fella's. so a friend of mine brought a Nokia 5310 from the states to karachi, Its from t-mobile. problem is the telenor sim is not being recognized once he installs it, It says that there's no network access, same is the case with almost all different network sim's we have tried to install, upon calling telenor's customer service they say your sim is fine but the phone isn't cause it is locked. the representative suggested to take the phone to a mobile shop and get it unlocked.
I was wondering if there's any possibility of us unlocking it manually? what stuff will we need to get it unlocked? all suggestion's most welcomed.