I used my upgrade at Verizon for my sons new iPhone 6. He currently has a 4. His new phone came with a pre loaded SIM card but it has my phone number because it was my upgrade. My question is ... Doesn't the SIM card contain my phone number ? Is it possible to dismantle the iPhone 4 and get his SIM card out and if so ... If it's too big can it be cut down ? HELP ??!!