Recently ported my number to O2 now IMessage not working

[JAGOW123]

I recently moved across to O2 and moved my number across with it. However, IMessage refuses to activate now. I have tried speaking to Apple support where we have reset network settings etc. I’ve confirmed that I can send/receive international SMS messages. 

please can someone assist?

[pgn · Accepted solution]

Sometimes, just letting it sit for a day or two after the network reset helps, @JAGOW123  - especially as O2 Porting has been taking a little longer than normal of late: https://community.o2.co.uk/t5/Apple/IMessage-trouble-with-old-and-new-ported-number/m-p/1585671/high...