New sim - old number

Is your EE SIM card still working @Becky Ridley?

What kind of EE SIM did you have - an eSIM or a physical SIM card?

Have you registered for an iD online account? 

If yes, then once the number you want to keep has switched to iD, it will be shown in your iD online account, @Becky Ridley. 

Are you using an iPhone @Becky Ridley? 

If yes, these messages could be referring to the Apple operated iMessage and FaceTime services. 

Apple will have linked your iPhone device, by its device ID, to a mobile phone number, for their iMessage and FaceTime services.

• If you turn off iMessage (from Settings > Messages > iMessage) and send a text, does the recipient see the number you want to keep?
• If you call someone, do they see the number you want keep?

In this situation, it might best to contact Apple about this message on your iPhone.

You can contact Apple for assistance online at https://getsupport.apple.com/, or try 0800 107 6285.

Hi @Becky Ridley 

Are you still having issues with this? I’d recommend the below;

1) Turn off iMessage (Settings > Messages)
2) Restart your phone (by pressing and holding the on/off button)
3) Tap Settings > Phone > My Number and confirm that it is correct. 
4) If it is not correct, please enter the correct number
5) Turn iMessage back to On (Settings > Messages)
6) Finally, go to Settings > Messages > Send & Receive and see if the correct number is displayed under "Start new conversations from:"

If you are having issues with step 4 please reset network settings and try again.

Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings.
 

Tom