So im planning on getting an evo for myself over the summer with a 69.99 everything and 450minute since it almost unlimited calling too, but the issue i have here is my parent do not use internet/text/ or basically anything on the phone beside calling people so switching to the sprint everything family i would be paying about 130-150 a month which is 40-60 more than what im paying for my Iphone and my parent 2x line our family plann with 1800 rollover minutes. Its still comes to about 120 i believe if i do sprint and att as its 59.99 for them and 69.99 for me. So i was wondering if i should move my parent to a Prepaid plan since they only use their phone for calling, or split it on two carriers.