Switched to the N3 from an iPhone 4. Love it! I can do more on this phone than on an iphone. But there are a few things that's been bugging me.
1) Sometimes I get a message the the phone is unable to update bookmarks when I try to save a bookmark. I have to wait for a a min or 2 to try it again.
2) My headphone controllers don't fully work. I'm able to skip forward, stop/pause, and play it again. Other than that, everything else doesn't work. Also if I get a call while listening to a song, the left ear on my headset stops working after I hang up from the call. I have to unplug the headphone for both sides to work. I went out and tested other headsets made by other manufacturers and got the same thing.
3) the phone intermittently stops working. The last update kinda helped with this but not fully.