I have a friend that's selling their Samsung Galaxy S (Verizon) and I'm going to wipe it before they ship it. I've wiped the SD card and the phone from the factory reset option but it still has the phone number listed in the phone. Is that not a big deal to have it there? I can't even see how to erase it? I was hoping a factory reset would take it back when the phone number and carrier information was entered. Is that possible?