iMessage won't activate

[mobutt]

I've tried all the typical steps, turned it on and off, reset network settings, hard reset, etc. Any advice?

iPhone 6S

 

[Xboct]

Please take a look at this: http://foxyios.com/troubleshootings/how-to-fix-imessage-waiting-for-activation-problem

 

[mdelrossi]

I had a similar problem. Couldn't activate iMessage and FaceTime across all my devices. Apple support couldn't do it, even opened a ticket with the advanced support.
Setup as a new phone did the trick.
A pain but it did work.
YMMV.
mdr

 

[Xboct]

I followed the tutorial above. I was using the Airplane Mode and it worked like a charm!

 

[mobutt]

I set up as new phone and went through all the steps on that site and nothing. Called apple care, nothing.

Fixed itself 6 or so hours later.