I've run into some small issues, but I my Passport is the best phone I've owned; I'm a convert from Android. I think the hardware and the OS are both fantastic; better UX and more stable than my Google Nexus.

Sorry to hear that you have had so many issues, though. I mostly use Hub (primarily text), the fantastic Browser, PDF reader, calls, mobile Hotspot/tethering, and several apps (mostly native).