How can I fix iMessage activation issues after iOS 18.4.1 update?

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Level 1

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How can I fix iMessage activation issues after iOS 18.4.1 update?

Hello, after updating to ios 18.4.1, i wanted to insert a new sim to my iphone 15pro ( its a chinese model, so it has dual physical sim slots ), ever since I did that, I had a big problem with iMessage and FaceTime not working for any of my two sim cards, I tried all the solutions I found online, I used to get waiting for activation, but now it seems like iMessage blocked my sim card because when I click on my number it says activation unsuccessful try again, and it just remains that way no matter what I try to do, I even reset my network settings, please help 🙁

[Re-Titled by Moderator]

iPhone 15 Pro, iOS 18

Posted on Apr 25, 2025 3:28 AM

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Answer 1

Top-ranking reply

HareClub4Men

Level 1

8 points

May 16, 2025 4:39 PM in response to habib159

If you’re having this issue, call Apple Support. Somehow my number/account was put onto an iMessage block list that they had to lift manually. The only way to get out on this list is if you get reported for repeated spam/junk messages from people you’re texting. I only text my friends so I know this isn’t how I was blocked, but that’s the only explanation the support person could provide for me.

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Answer 2

Apr 25, 2025 5:55 AM in response to habib159

Are you using a VPN?

FaceTime might not be fully supported.

Wireless carrier support and features for iPhone in Asia-Pacific - Apple Support

Have a look at the related article, in case you missed some troubleshooting steps:

If you can’t turn on or sign in to iMessage or FaceTime on your iPhone - Apple Support

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Answer 3

Apr 25, 2025 11:23 AM in response to habib159

If your email address is working with iMessage now, can you enable your phone number in Settings/Apps/Messages/iMessage/Send & Receive?

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Answer 4

Apr 25, 2025 7:40 AM in response to habib159

Did you try to use your email address instead of your phone number, as explained in the article?

Does your carrier support iMessage and allow SMS to be sent to Apple?

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Answer 5

habib159 Author

Level 1

4 points

Apr 26, 2025 7:51 AM in response to habib159

I contacted apple and the issue was resolved after 12 hours or so, thanks for the help!

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Answer 6

habib159 Author

Level 1

4 points

Apr 25, 2025 11:03 AM in response to Ingo2711

Hello again, yesterday I had the same sim and imessage was working just fine as usual, so yeah my carrier supports iMessage, im having to use email now but its not ideal for me as I would like to have my sim number paired with iMessage as it was previously

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