AT&T 4 lines (2 adults 2 kids) x $40 each + taxes = ~$200 per month, $2400 per year. This is unlimited data, text, minutes - we used to have a data cap, but the worry about the kids exceeding it when out and about was not worth the savings. We could probably ditch the unlimited minutes for at least the kids lines. We also sometimes have an upgraded phone on the bill at 0% interest over 24 months - there is generally a pretty significant discount compared to the device vendor, with the downside that AT&T does lock the device to its network for those 24 months (unless you pay off the discount you got).