<prompt> Human: I currently have a family plan consisting of 5 lines, plus a DirecTV service rarely watch that is a prerequisite for the unlimited data plan. I consistently reach 16 or more gigsmo. of data on my line alone. Ive been with ATT since 2001 hoping they can lower my monthly. I havent had any major issues that would warrant switching to a different carrier. Any useful tips? Thanks in advance.  <response>: 540 for 5 phones? That is ridiculously expensive, time to start shopping around. Is everyone on your phone plan leasing very expensive phones? You may need unlimited data, but does everyone else? Id like to see a breakdown of your bill. I helped my parents bring down their expensive cell phone bill with sprint. They were paying for a lot of stuff they didnt use. 