iMessage and FaceTime show wrong number after SIM change

Turn off iMessage and FaceTime. Power the phone off, and back on again. Go into Settings and turn iMessage and FaceTime back on to see if they activate.

hi DZanvettor, dis you solve it, I have the same issue since two month ago, I try everything with no success

Check to see if the foreign network that you were connected to installed a profile on your device. The profile would show up in settings. I would also suggest that you do a restore on the phone, with your regular SIM installed.

I'm pretty sure that it is under Settings>General. It might be under Settings>General>About. You would find it at the bottom of the page.

No, I was not talking about VPN profiles. I was referring to the fact that some of the non-approved carriers will install profiles on the phone since they do not have carrier files on the devices. This is how they are able to get changes to be made to APN settings. If the carrier you used is a supported carrier, then the use of their SIM could have installed their carrier file on your device and now the SIM you generally use is not updating your regular carrier's file. Generally, if you have reset Network settings, or Reset All Settings on the device it will correct itself. If not, you may have to go to Settings>General>About> and if there is a carrier update, that usually will get your network to display the prompt to update it on your phone.

If you have not Reset All Settings, that is in the same place on the General Menu where you reset Network Settings.

Does iMessage even show that it is activated, let alone for the right number, or does it show waiting for activation? It almost seems as though the activation text is not going to the activation server. Otherwise, I agree there is something going on with the carrier. Good luck.

Has anyone figured this out yet? I just came back from a business trip to China about two weeks ago, and I am having this same exact problem. And I tried everything, just like DZanvettor. It's such a frustrating problem. In fact, so frustrating that I am sort of relieved that I actually found a thread that is talking about the exact same issue I am having. I really hope someone solves this. Really annoying.

Do you have other devices that share your iMessage and FaceTime username? If so turn off iMessage and FaceTime on these devices too. When I returned from USA in 2010 I recall having issues similar to yours. I can't tell you what solved it but lots of network setting resets and toggling iMessage and FaceTime eventually got there.

You can try to deregister too https://selfsolve.apple.com/deregister-imessage

Hi, I had this problem since having changed mobile operator in the UK and I had my old number transferred over. Even after my number had been transferred over, when I sent iMessages and did FaceTime calls the number belonging to the new operator SIM would show (the new operator number was also visible under the Send & Receive addresses and my old number was nowhere to be seen). The solution for me was to do exactly as stated above; I switched off iMessages and FaceTime, then turned the phone off and back on, then switched iMessage and FaceTime back on and voila! My old number is now showing as the main number.

WWorked for me, thanks.