I was in this position when I started the thread. I'd just updated to beta 3 and so thought there might be an issue with the latest beta. A few others on the forums had the same issue but not everybody.
Originally Posted by Aaron662c
Totally out of the blue and about 3 days later it began to work again. It's been fine ever since.
If I were you I'd leave it for a couple of days then give it a whirl. I think Apple probably have a few different Siri servers in different locations and they are updating or maintaining them one by one
I reackon it'll come back up for you soon
Sent from my iPhone 4s using Tapatalk