Spoiler: they all fucking suck. I used to have a Kyocera 7135[1] on Verizon with Minutes of Use(!) for data long before any unlimited data plan existed. This

Spoiler: they all fucking suck. I used to have a Kyocera 7135[1] on Verizon with Minutes of Use(!) for data long before any unlimited data plan existed. This was a device that didn't support cellular data in the traditional sense so they couldn't bill extra for for it. Once the Treo 650+ started rolling out they started coming out with the $50 data plans. Mysteriously everyone with a Kyocera 7135(including myself) started having "issues" where those devices wouldn't authenticate on Verizon's CDMA network. They offered a Treo 650 as a replacement with a promise no plan change. Of course, plan change and $500+ bill the next month as it moved me over to a per-KB data plan. Fought them a long time on it and eventually had to give up and pick up the $50/mo extra. They weren't allowing Kyocera 7135s or Minutes of Use plans any more. Found out a while later that everyone else on HowardForums hit the exact same thing and yet other CDMA providers outside the US had no issues the the 7135. Verizon, ATT, T-Mobile. Take your pick they're all going to probably try to screw you one way or another. Although I'll give that T-Mobile tends to better about what devices they let you bring and what they open their network to. [1] https://www.phonearena.com/phones/Kyocera-7135_id400 https://www.phonearena.com/phones/Kyocera-7135_id400