In short, I have 2 lines on my account. We are on an old 450 anytime minutes plan as this preserves our unlimited data. As everyone knows, it's not unlimited, so I want to switch to mobile share plan which includes some discounts for using next. Can I switch to next/mobile plan after upgrading and signing for 2 years? I went to ATT store and asked if I could switch to mobile share plan before my 2 year is up and they said I could at anytime. I wonder if this is true if I upgrade with 2 year contract when 6S comes out.