badgolferman wrote on Fri, 9 Aug 2024 12:32:29 -0000 (UTC) :

What's gone wrong and how to fix please?

Maybe when the SIM was replaced the iMessage function was disabled. Check under Settings / Messages / iMessage toggled on.

As badgolferman kindly noted, it's a commonly asked question, where the
first amelioration in most of the articles I saw was similar to his kind advice.

Take note that you ported a number which may have added/removed a
complexity.

https://community.idmobile.co.uk/ask-a-question-18/imessage-not-activating-after-number-port-56256
Add the number you want keep to your AppleID:
Go to Settings > Name, Phone Numbers, Email > Contactable At
Choose Edit
Enter your correct number, using +44 instead of the first 0
Tap Save
Reset iMessage settings:
Go to Settings > Messages
Toggle iMessage to OFF and then back to ON
Once iMessage has been activated, scroll to Send & Receive to check if the right mobile number is ticked
Reset FaceTime settings:
Go to Settings > FaceTime
Toggle FaceTime to OFF and then back to ON
Once FaceTime has been activated, scroll down and check if your mobile
number is ticked under You can be reached by FaceTime at

https://productioncommunity.publicmobile.ca/t5/Get-Support/Transferred-SIM-to-new-iPhone-and-not-working/td-p/753000
Go to Settings > Messages and make sure that iMessage is on. You might need
to wait a moment for it to activate.
Tap Send & Receive. If you see "Use your Apple ID for iMessage," tap it and sign in with the same Apple ID that you use on your Mac, iPad, and iPod
touch.
In the "You can receive iMessages" section, make sure that your phone
number and Apple ID are selected.
Go to Settings > FaceTime and make sure that your phone number and Apple ID
are selected in the "You can be reached by FaceTime at" section.

https://helpforum.sky.com/t5/Sky-Mobile/Imessage-facetime-not-working-on-number-transfer/td-p/4486904
Go to settings, message, send receive
Tap on Apple ID and sign out.
Turn iMessage off.
Turn your phone off for at least 10 seconds
Go to settings, message, iMessage turn back on
Tap on send receive and sign in to Apple ID
Make sure correct number showin in "start new conversations from"

Sometimes it just takes a day or two... https://community.o2.co.uk/t5/Apple/iMessage-won-t-activate-after-number-port/td-p/1617814

--- SoupGate-Win32 v1.05
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On 2024-08-10 02:17, Chris wrote:

Chris <ithinkiam@gmail.com> wrote:

A family member transfered to a new mobile provider with a new SIM, with >>> the number ported over, and has now lost the ability to send imessages.
All messages come as SMS and green bubbles. This makes group chats
impossible.

What's gone wrong and how to fix please?

New info: apparently it only affects messages to me and my wife. For
everyone else imessage works just fine for this family member.

imessage works just fine for me with everyone apart from this person.

What gives?

Nobody knows what gives, but my suggestion in my other reply stands.
(I've occasionally had work messages working with some people but not
others. Log out and back in again; possibly restart the phone).


--
"It would be a measureless disaster if Russian barbarism overlaid
the culture and independence of the ancient States of Europe."
Winston Churchill

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 2024-08-09 08:04, Chris wrote:

A family member transfered to a new mobile provider with a new SIM, with
the number ported over, and has now lost the ability to send imessages.
All messages come as SMS and green bubbles. This makes group chats impossible.

What's gone wrong and how to fix please?

Usual iMessage fix is to log out and back in. Sometimes on more than
one device.
May also need a device restart.

--
"It would be a measureless disaster if Russian barbarism overlaid
the culture and independence of the ancient States of Europe."
Winston Churchill

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)