Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Canezmd

macrumors regular
Original poster
Feb 6, 2011
139
426
Installed 15.4.1.... no more iMessage from my phone number. Pops up a message that says "activation unsuccessful" "turn on iMessage to try again".

Tried force reset, turn iMessage on and off, turn FaceTime on and off... no luck. Just green SMS messaging.
 
  • Wow
Reactions: sorgo †
When you’re turning iMessage and FaceTime off, is it for a couple minutes or just a quick switch?
 
Last edited:
I turned off FaceTime and iMessage… forced reset… then turned back on. No luck
 
Just turning those off will not fix it. You must go to settings sign the phone out of the Apple ID/Icloud account and then sign back in. Of course you will have to wait for all of your icloud items to resync
 
Nope… didn’t work. Signed out if iCloud and Apple ID. Forced reset. Signed back in. Still says activation unsuccessful.
 
  • Sad
Reactions: sorgo †
Same for me.
Tried toggle off/on - no luck
Signed out of iCloud/back in - no luck
iPhone 13 Pro on T-Mobile here
iMessage works for my email addresses - but my cell phone number is checked, and errors out if I try to check it
 
13 pro max on t-mobile. T-mobile reset network and says it’s all good on there end. I can see my number under iMessage, but can’t check it off to send or receive.
 
I don't know what you mean by reset but did you try to turn off the phone after turning off FaceTime and iMessage then turn the phone back on and turn on FaceTime and iMessage? If you are on pay as you go [prepaid] you need to make sure you have topped up, otherwise, try to check with your network/cellular/mobile provider...

My local network no longer charges for iMessage and FaceTime activation since iOS 15.x (I'm not within North America)
 
I’m having the exact same issue it’s been going on for 2 weeks today. But what’s weird is the past 2 days around noon it will work then go to the unsuccessful. I have a callback with apple tonight. I have a 13 Pro Max with T-Mobile.
 
Interesting thread - I have a friend who is on T-Mobile and I have a group iMessage thread with him on it. For some reason, a few weeks ago, his email was somehow started being used instead of his phone number on our thread. He was not receiving any of our group messages. Changed it back to his phone number and all is well. I wonder if the issue is on T-Mobile side and not Apple?
 
I have this exact same problem. I’ve tried every variation of resetting the phone, log in/out of my AppleID, iMessage on and off and back on. Nothing fixes it. T-Mobile 13 Pro Max. It’s infuriating and it started the second I installed 15.4.1.
 
I called t-mobile and they said there's nothing wrong on their end. I can see my phone number as an option but it won't let me check it off.

Now on the phone with apple support... level 2 support has no idea what is wrong after trying all the reset, sign in, sign out, etc.

Just sent in logs for engineering to review. What a mess.
 
Apple told me to wait another 24 hours... if it's not fixed tomorrow, I'm going to tmobile and getting a physical sim
 
So apparently it worked… apple had me sign in and out of messages, then reset network settings, then in and out if messages a couple times, then turn on messages and wait for 24 hours. This morning it works! It wasn’t working at 3 am this morning, but at 9 am it was. Doesn’t make any sense. Do apple servers only update once a day??? Whatever
 
I ended up going to T-Mobile yesterday and swapped the esim for a physical sim. Took 5 minutes and was able to activate iMessage and FaceTime immediately.
 
  • Like
Reactions: jpr281
So I got a physical sim and it’s all good now.

I called apple to tell them how to fix it for other customers… they told me they have no way to add to their internal knowledge base from my experience with the physical sim and that I should go online and file a report on their website. I told them “that’s why I’m calling to tell you what happened, so you can report it”. They said they can’t do that internally. What a terrible system… if it weren’t for the forums, this wouldn’t have gotten fixed.
 
This very thing happened to me after updating to 15.4. Went back and forth between T-Mobile and Apple, each blaming the other, reset network, reset phone TWICE until that whole iCloud outage was resolved and it coincidentally started working again a few days after it broke. Now it's just started happening again to me. My phone has been on 15.4.1 since it rolled out but it only started this nonsense again today. I too have a T-Mobile e-sim only. May go by the store to pick up a physical sim tomorrow if it hasn't sorted itself out. This is definitely a widespread bug that neither party has really acknowledged and sought to resolve.


Has swapping to the physical sim continued to work for you?
 
Last edited:
This very thing happened to me after updating to 15.4. Went back and forth between T-Mobile and Apple, each blaming the other, reset network, reset phone TWICE until that whole iCloud outage was resolved and it coincidentally started working again a few days after it broke. Now it's just started happening again to me. My phone has been on 15.4.1 since it rolled out but it only started this nonsense again today. I too have a T-Mobile e-sim only. May go by the store to pick up a physical sim tomorrow if it hasn't sorted itself out. This is definitely a widespread bug that neither party has really acknowledged and sought to resolve.


Has swapping to the physical sim continued to work for you?
Mine would randomly check/uncheck.

Went to T-Mobile today and got a physica SIM. Worked immediately. It’s only been 5 hours, but it almost never worked that long before.
 
Interesting thread - I have a friend who is on T-Mobile and I have a group iMessage thread with him on it. For some reason, a few weeks ago, his email was somehow started being used instead of his phone number on our thread. He was not receiving any of our group messages. Changed it back to his phone number and all is well. I wonder if the issue is on T-Mobile side and not Apple?
I noticed this when I texted a new number and they asked me for my phone number. I was confused since I had just texted them and assumed they could just see it but sure enough, my email was being used instead of my phone number for iMessage. Same thing with FaceTime. I noticed this morning when I tried to make a call from my Mac using my iPhone. It gave me an error saying that I need to be using the same Apple ID/iCloud account except I was using the same Apple ID and iCloud account. Only issue is FaceTime won't activate my phone number for me.

UPDATE:
I removed my cellular plan from my phone and setup my eSIM again. iMessage and FaceTime are working again with my phone number!
 
Last edited:
  • Like
Reactions: VineRider
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.