T-mobile one - they had a promotion for 3 lines for $100 with free iPhone transfer in. Paid off my phones with the gift cards they sent. I don't burn more than

T-mobile one - they had a promotion for 3 lines for $100 with free iPhone transfer in. Paid off my phones with the gift cards they sent. I don't burn more than 2gb of data per device as I am mostly on wifi, so I get $10 as kickback. So, it works out to $80/month.