IMessage or AirPlay not working?

So apparently with mountain lion you"re supposed to be able to continue a text across all your devices, but none of my text conversations show up on my iMac or iPad.iMessage is activated on all my devices. Also your supposed to be able mirror your display across devices but neither my iPad or iPhone shows up in display preferences in mountain lion or iPad or iPhone.

Those conversations only show up on that one device.

  • What if you didn't get Airdrop and Airplay with IOS 7? I have an iPhone (obviously), and I downloaded IOS 7. I have a iPhone 4s and in the control center there's no Airdrop and Airplay. Did something go wrong in the download?
  • IPhone video airplay to Apple TV bad quality? Needed I have a iPhone with hd videos and films, what's the best method of watching this on a TV? I've got a Apple TV and have airplanes the video to this but the quality is really poor compared to the quality on the iPhone. What's the best way of watching it HD on my tv?
  • Imessage not working, not delivering and turning green with certain number? So recently i went to bed and when i woke up I could no longer text this specific person. I thought they blocked me so i deleted the convo. I got an email from them asking i blocked them? I tried texting the messages turned green when she has an iphone and it wouldn't deliver. Hers wouldnt either. I've signed in and out of imessage but nothing worked so far. What's wrong with my phone?
  • How to use AirPlay with the screen on your iPhone 4G? Same thing with iPhone 5, all Macs, and all iPads. Read the last two words of the question, please. ("How do you use AirPlay with the screen on your iPHONE 4G?") But luckily I can use the iPad that I got from school starting Monday (when we finally start taking them home with us.