My son was given a brand new nokia lumia 625 by his godfather who got the phone on his contract but didn't need it. my son and his godfather were both on vodafone so presumed no unlocking needed I've managed to load my son's gmail account on but when i want to add apps onto the phone, his godfathers email account shows and i can't find a way of amending this...what do I do?
You will need to do a factory reset of the phone here without doing a back up. This will clear any accounts previously on the phone and enable your Son to be able to set the phone up from 'out of the box'.
If you go to your settings there should be something about restore factory settings/reset phone.