The phone number "is not registered with iMessage"

• I've been texting this individual from my MacBook for months. This morning I get the "not registered" message.

• I can text this number from my iPhone but not the MacBook.

• The MacBook displays the message I send from the iPhone but won't send to this number.

• I can text other numbers. Seems to be something about this number.

Q1:Why OK from the phone and not the computer?

Q2: What does it mean to register a particular number?

Thanks for the reply.

This number has been in my Contacts for over 15 years and I was texting fine from the computer until High Sierra. Messaging from iPhone works. It's just the MacBook that has stopped working.

Thanks again.

Hi,

I'm also having the same problem. I keep on getting the message ("phone number" is not registered with iMessage) whenever I tried to send an SMS text message from my Macbook Air.

I can't get the text messages from my iPhone 5s to synchronise with iMessage using the latest Yosemite update. On the previous Mac OS X Mavericks, only a few contact numbers worked.

I would greatly appreciate if anyone can help me with this issue.

Cheers,

Demo14

So how does one do that. It seems the help notes in iMessages do not give complete instructions. The person I wish to message is in my contacts and I can send him msgs using my iphone and ipad but not my computer.

You must register your phone number by signing into iMessage from your iPhone. If you are already signed into iMessage on the iPhone, sign out and sign back in on the iPhone.

If it still doesn't appear on the computer, sign out of iMessage there and sign back in. It should appear then.

Also, in order to send SMS messages from the computer, you must enable it on the iPhone. In iPhone settings, open iMessage. Select Text Message Forwarding. You must be on the same wi-fi network. Your computer or other device should show in the list. Just click on the device you want to enable.

Also enable SMS on the iPhone.

The problem is not not being able to send msgs at all. I'm doing a fair amount of texting. On my MAC, I cannot send to some people to whom I can text on iPhone or iPad. When I do text them on the iPhone or iPad the msg then shows on my MAC but I cannot send or reply to them on the MAC.

Maybe I can be clearer. My iphone shows up in messages on my mac and I can text a large number of person with and without iphones. It's not my phone for which I receive the mmsg not registered but for toehres, their numbers are highlighted in red in the recipient box. My phone and my iphone have no problem texting the same people just my mac.

Hi Parrish Jones, my problem was identical to yours. My iPhone showed up in Messages on my MacBook Pro. I could text anyone from my phone that I wanted to. The problem was on my MacBook Pro. Many people I tried to text via the MacBook Pro would be highlighted in red and I would get that number not registered message. When I read that the solution was to go to the phone and change a setting on the phone, I thought, that won't help my MacBook Pro problem, but it did. It solved the MacBook Pro problem.

If you follow the instructions that Glenn provided, I think that it might solve your problem. I know the instructions sound counterintuitive as your problem isn't on the phone, but you should try it. It worked for me. I hope you get the same results.

In iPhone settings, open iMessage. Select Text Message Forwarding. You must be on the same wi-fi network. Your computer or other device should show in the list. Just click on the device you want to enable.

Also enable SMS on the iPhone.

Hey, Apple, where are you?

Apple has not addressed this issue! I can find no help for solving this problem, but I see I am not alone!

I try to send my husband a text, and can only send to his desktop or to his Air. I can't use his phone number for his iPhone. When I try to, the name turns red. This is terrifically frustrating, and I've spent hours on several days searching all over the place for reasons why this might be happening and how to fix it. We've got all his devices set to work together, but still, I get the "not registered with Messages" info regarding his iPhone number.

Prior to this, all of my MMS texts were turning green when I tried to send to anyone on all my devices. Those messages were appearing as email, not as text messages, or I got a note saying that my message couldn't be sent. What about all the interoperability and hand-off and happy-harmony we were supposed to get with Yosemite? I have only had frustration, wasted days of my work time and angst! Here is the message I get:

Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.

Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.

Feedback

Or you can use your Apple ID to register with this site and go the Apple BugReporter. Supposedly you will get an answer if you submit feedback.

Feedback via Apple Developer

that must be really frustrating - especially as the others work! I tried to keep a track of all I did on an email draft, but maybe some was just intuitive and/or luck. This is what I saved, if it is any different:

You must register your phone number by signing into iMessage from your iPhone. If you are already signed into iMessage on the iPhone, sign out and sign back in on the iPhone.

If it still doesn't appear on the computer, sign out of iMessage there and sign back in. It should appear then.

Also, in order to send SMS messages from the computer, you must enable it on the iPhone. In iPhone settings, open iMessage. Select Text Message Forwarding. You must be on the same wi-fi network. Your computer or other device should show in the list. Just click on the device you want to enable.

Also enable SMS on the iPhone.

See the answer in context

2. Messages/Accounts/Message Account/Settings - click add e-mail and enter the phone number.

3. Open Messages, click Messages>Preferences, open your Apple ID account within, on Settings tab add phone number in "You can be reached for messages at:"

in response to blackdogaudio

yes, but first I had to do a number of actions. Not sure if the order is correct, because I was just feeling around, trying to follow leads, and see what worked.

-open MMS in Messages under settings, so here Apple sent me a passcode which appeared on my computer screen, saying something new was going on, and did I approve

-then make sure the persons phone number was IN contacts, went to

-Messages/Accounts/Message Account/Settings - click add e-mail and enter the phone number.

-then in Message, open Preferences, Account and switch on (somehow I had switched it to this 'Bonjour' thing. who knows if that is what made a difference.

But voila! green name on messages, green, and message FINALLY delivered.

strange that it had worked for months and months, using my iphone5, but maybe stopped when I got the iphone6, and they did not tell me everything had to be closed and opened again.

Whatever! who knows, when one contact's phone did not relay messages properly it was dumbfounding, and I solved it. My son was not impressed with my ingenuity, no doubt figured it was just the old one dumbly wandering around, but it seemed to me it took about 4 or 5 separate interactions, and Apple support was no help. Keep googling your problem.

At one point - probably the crux: a message popped up on the computer that someone was trying to use imessage from a new device, and gave me a code.

so you need your computer open at the same time that you are working these settings. good luck.

I can't send some text messages from my computer

You can't seem to understand English...the person keep saying they cannot send messages on their computer.

Me too. What do i need to do. Im kind of simple so i need specific instructions or else im lost. Please help.

Where did you go to switch to mobile on the account?