I haven't been having very good luck with my switch so far. I have been using an iPhone 6+ and finally tracked down a 64gb Note 5 today for Verizon.
All day it has been more annoyances than good events. It started with the Battle.net mobile authenticator app which has a restore mode if you can get into the menu, but you can't with a Note 5 or GS6S Edge+ because when you hold down the back button which works as the menu button for most other apps, it just takes you out of the app.
It's well documented on the blizzard site and a fix may be coming at some point.
So I went for a walk using my fitbit app and a new podcast app. A combination I've done with my iPhone about a hundred times. The fitbit app seemed to keep causing my note to hang, I couldn't even get the lock screen to respond correctly and it seemed like the launcher kept crashing.
I tried again tonight walking the dog, exact same issue. When it was at its worst it would also cause the podcast app the pause.
The battery life has been a huge letdown as well. I've had this thing on the charger about a dozen times now just to get enough power to go a little longer.
I don't know, I'm having a hard time not just returning this thing. I love so many of the features but some of the stuff I use daily like the fitbit stuff is just not working.