After 48 hours with a clean install of 10166, I went back to 8.1 last night. Here's why:
- Even after I set it to install apps on the internal memory I still kept getting SD card errors. The SD card wouldn't show up in the storage section, I couldn't change where apps are installed because it didn't see the SD card, but yet I had music on the SD card that would play. I thought maybe my card went bad, but it worked great on 8.1 before and it's working great now that my phone is on 8.1 again. It was just 10 that was the issue.
- The bluetooth integration with Sync on my F-150 was awful. Apparently there are some known issues with Cortana over Bluetooth and I would have to agree. Things that worked before (in 8.1), such as "Play album 'The Medicine'" which would (crazily enough) play the album but in Windows 10 mobile it just does a search. I use that feature a lot.
- I couldn't set up my office email on it. Every time it would direct me to my company's ADFS page, I'd get an error in the browser and so I could never set up the account. This one was a pretty big deal.
I was hoping it would be stable enough for me to use on my daily driver, but for
me it's just not there yet. I do like what I see, though, esp. in the music app. If it ships relatively bug free, I think I'll really like it.