okay, so I pre-ordered the 6S on my mom's cell number at 3AM and it'll be here on launch day. Last year when the 6 came out, I used my dad's contract and the Verizon dude did something and switched the numbers. What I'm trying to say is, I'm in Verizon and I'll be taking my mom's 6S and she will be taking my 6. Should I activate the 6S (it'll be her number I believe), then backup her old phone and my phone and just switch the SIM cards? Or will I have to call Verizon and get them to switch the phones. I want to use her new 6S put have my number. WE ARE ON DIFFERENT PLANS (I have edge) so I could not have just taken her upgrade in the first place. Thank you so much!