Some services not working after number change

[Apple5]

Hi everyone,

requested a number change last Sunday (4 days ago) which went through all fine. New number works and makes and takes calls. However there are some problems:

1) iMessage just won’t activate (believe me I’ve done everything under the sun but it seems after speaking with o2 it is in fact a network issue) 

2) sometimes I don’t receive authentication codes sent by sms and sometimes I can’t send sms to certain numbers. 

anyway I have spoken with o2 and this has been raised to the relevant department. Quoted a “call within 3 days” 

how realistic is this? Since I have given this new number to everyone I know and I cannot use iMessage it is very frustrating as it was/is the service I used most to contact family/friends. 

has anyone had experience with this team? Is there a way for this to get sorted more quickly? 

many thanks 

[MI5]

@Apple5 

Have you checked the correct number is shown in Settings >Phone >My Number?

[Apple5]

At least 3x per day for the last 4 days 🤣

[gmarkj]

Might be worth asking o2 for a blank sim so you can swap your number to it in case that helps @Apple5.

Another user managed to get the settings>phone>my number correct by turning the phone on once the sim was removed.