Since I've had this phone, my data use has skyrocketed. Granted, I have disconected my ethernet cable and used easy tether just for testing. maybe a day. I have also enabled wireless tether (root) and run my roku for several minutes - works great by the way, fast as my ISP and delivers HD content without a hickup. I love this phone, but if I didn't have unlimited data, I would very concerned. I don't see how someone with a tiered plan could really enjoy all it offers... That's all.