Who I have the same questioned this topic

I did the same recently. My Windows Phone was a backup/secondary device, but I'm walking away at least until the Surface Phone arrives. I'll re-evaluate when I read some first hand reviews by end users. That won't be until mid to late 2017 though. My new secondary device is a BlackBerry. I know, right? Old school - BB7 on a 9370, no less! I'm going to move up to a Q10 so I can get data services over WiFi on a prepaid line. Unfortunately you just CANNOT get the old BIS data plan on prepaid, which is a bummer.