Heh, I was just going to ask if MS had a find my phone feature and there it is on the webpage.
So, here is my long breakdown of what I use the 4 for, and how the 920 will compare.
PHONE
- Haven't heard any complaints about the 920's call quality, so I should be good.
MAIL
- I use two gmail accounts on the stock apple mail app. Once again, I should be fine here
TEXT
- Emoji was my main concern and it's there
INTERNET
- Haven't heard any complaints about IE 10. And IE 10 on my Yoga works great.
SPOTIFY
- Might have a problem here. Some of you guys were saying it's on WP7 but doesn't work on WP8? Odd. I use Spotify every day while driving to clients.
CAMERA
- The 920 will beat my 4 in every way
CALENDAR
- As long as it syncs to my Yoga we're good
PULSE
- It looks like they got rid of the App in favor of the web app? Odd, but I'll pin it to the start
FACEBOOK
- My main concerns were tagging a person and location in a status and liking comments within comments (INCEPTION), not just an initial comment made. You guys cleared that up for me.
TWITTER
- Is the official app still kind of bad?
YouTube
- Metrotube it is
KIK
- Taking a chance here. I hope the notification system was fixed from WP7. On WP7 I'd get the toast but wouldn't have any number notification on the tile
MAPS
- No contest lol
4SQUARE
- I heard 4th and mayor is better than the official app
INSTAGRAM, FITOCRACY, MINT, DROPBOX
- I'll miss you guys

At least Mint is coming soon and I'm sure the same can be said for Dropbox. Fitocracy isn't on Android and who knows with Instagram.
GAMES
- Yes, there are less games, but I'm spinning this as a positive. As long as WP8 gets the big releases I'm happy. Having achievements is a huge plus for me, and I will get out of that iOS mentality of own tons of games and barely play them.
UI FEATURES
- Take screen shots (check)
- Cloud backup and restore (check)
- Over the air updates (check)
I think I got everything.