-Google Fit works fine if you download the version available on the Play Store of the DP3 image. It's a new version, very sleek and sexy.
-The APN is not something you can edit from the watch connectivity menu. Seems it is pushed from the cellular network (in my case at least..)
-The image available works fine on my Canadian Videotron network. I think it is optimized for North American cellular networks so if you are based in Europe of Asia, i would advise you to validate if it will work fine with your watch by doing a bit more research.
I still run DP3 on my watch. I have found small bugs that are more an annoyance than anything else but it was to be expected. Here's what i have found so far:
-The watch is super fast 95% of the time but, sometimes, it will become a bit sluggish when accessing the app menu. A reboot fixes this.
-Long Clicking on the crown gives you access to Google Voice. It works good for most commands but... I can't seem to be able to use it for text or voice calls. That's the only time it does not work. If i get a text and reply using my voice, it works great. If i try to send a text from Messenger directly and dictate the content, it works well also..
- When using Ghostracer, if i end my activity and try to save it, the screen goes blank for a few seconds and then come back. The activity is recorded and saved, so it appears to only be a display issue, nothing more.
-When downloading new Watchmaker watchfaces sometimes the screen will go blank for a few seconds and then come back to life with the new watchfaces working fine..
-When selecting the weather app in the app menu, the app does not load and times out. If it try to use the Google Now app in order to find out about weather, it works like a charm...
-I miss Google Maps.. I tried installing it using ADB but it failed.
That's it. So, overall, it's just minor things and i am very happy on a daily basis. The fact that i can use the new Google keyboard or screen letter writing method to answer all my text, emails and social network chats is really the main reason i got it on my watch and i could live without it now.