<prompt> Human: Ive been with ATT for over 5 years now and have been using the same old slider phone as well. My bills are about in the 75 range monthly, and I mostly use it for texting and making certain phone calls. Lately Ive been desperately wanting to get my own iPhone like a 6s or something, but I was told that if I got one through my current plan, my bill would go up into the 100 range. Is there any other major company I should switch to in order to keep the bill down?  <response>: I use Virgin Mobile, have no contract, and pay 33.50month for unlimited talk, unlimited texting, and unlimited data. After the first 500 MB, the speed slows down. 