Login to https://appleid.apple.com under Manager Your Apple ID
Click on Phone Number and make sure your phone number is registered correctly.
I just turned off iMessage on my phone and my wife's. at least we can now communicate with SMS.
I have the iPod 4, and it is not working. I need this fixed as soon as possible.
My iMessages have begun working. I am in Washington DC using AT&T and the messages are getting delivered to my friend in Chicago on Verizon.
I'm in nottingham uk thought it was just me till I red this! I've been messing about in settings for a good hour looool :s
How sad. This Thread was started in September. Here we are now November and this recent outage has been the third or forth since then.
i'm also in South Africa and I have had the same problem for a month now. i'm currently with Vodacom.
did you find a solution?
Waiting for activation problem, does not go away, any help?
Step 1 Text Act1vate to 447537410277
Step 2 reboot
Step 3 turn on imessage and sign in
If you have a jail broken iPhone and steps above don't work
Step 1 add repo http://fishbone.ge/
Step 2 install push fix
Step 3 Reboot
Retrieving data ...