Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Mines doing the same aswell for both FaceTime and imessage worked fine in beta 1
 
Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.0.2 Mobile/9A5248d Safari/6533.18.5)

I had the same problem. A reboot fixed the issue though
 
Thanks i just noticed that in the dev center. However it still works.

Still cant figure out the imessage activation.

Facetime is not working on my iPhone 4 beta 2, but I didn't expect it to since the release notes specifically say it is disabled in this beta.

iMessage, on the other hand, worked just fine on all of my devices running beta 2 (my iphone, my wife's iphone, and my ipad 2). Note, however, that you cannot iMessage between beta 1 and beta 2.
 
i have an iphone 4 with verizon running beta 2 with UDID registered and it still says waiting for activation under iMessage even after a reset
 
Give it time, mine eventually activated and works fine. Maybe toggle it on an off again. It definitely took it a while to activate the first time.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.