Messages on MacOS 15 not doing RCS

I have a conversation with my son on my iPhone and it says in the text input area: "Text + RCS." The same conversation on MacOS Messages says "Text + SMS".


Does this mean that MacOS 15 does not support RCS? If so, that's just beyond disappointing.

MacBook Pro 16″, macOS 15.0

Posted on Sep 16, 2024 4:32 PM

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Posted on Sep 21, 2024 5:50 PM

I need to send a message ON MY IPHONE for it to change to Text - RCS. If I send a message on my Mac or iPad, it stays as Text - SMS. Once I send one message to an Android user on my iPhone, the conversation changes to Text - RCS on all my devices and I can use RCS from now on. I think if I send a message on my Mac, and then check the chat on the iPhone, it will flip to RCS. But I need to open the chat on the iPhone for it to change to RCS.


I'm in several group chats and we have a few iPhone users that won't update until 18.1 comes out, so all those group chats are stuck at SMS/MMS levels. Very frustrating.


I wish US users would do what the rest of the planet does and get the heck off of Messages/SMS/MMS/RCS and use Signal/WhatsApp/WeChat/Telegram.


But since we Americans seem too stubborn, I'm glad RCS is here. But RCS is here under malicious compliance. Apple implemented RCS as written in the original spec detailed in 2007/2008. Since then, Google has layered end-to-end encryption on top of RCS. Sadly, Apple did not choose to implement that.


I really wish RCS chats would have a different color bubble from green. It would be nice for Messages to be blue, SMS to be green, and RCS to be Orange. I'd also like to see Apple implement Google's end-to-end encryption on top of RCS, and give that an orange bubble with a small padlock.


Clearly Messages is the most feature rich of all these protocols. But it's nice that RCS is here so I don't have hald the images I send end up not delivered.

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Sep 21, 2024 5:50 PM in response to RionDunn

I need to send a message ON MY IPHONE for it to change to Text - RCS. If I send a message on my Mac or iPad, it stays as Text - SMS. Once I send one message to an Android user on my iPhone, the conversation changes to Text - RCS on all my devices and I can use RCS from now on. I think if I send a message on my Mac, and then check the chat on the iPhone, it will flip to RCS. But I need to open the chat on the iPhone for it to change to RCS.


I'm in several group chats and we have a few iPhone users that won't update until 18.1 comes out, so all those group chats are stuck at SMS/MMS levels. Very frustrating.


I wish US users would do what the rest of the planet does and get the heck off of Messages/SMS/MMS/RCS and use Signal/WhatsApp/WeChat/Telegram.


But since we Americans seem too stubborn, I'm glad RCS is here. But RCS is here under malicious compliance. Apple implemented RCS as written in the original spec detailed in 2007/2008. Since then, Google has layered end-to-end encryption on top of RCS. Sadly, Apple did not choose to implement that.


I really wish RCS chats would have a different color bubble from green. It would be nice for Messages to be blue, SMS to be green, and RCS to be Orange. I'd also like to see Apple implement Google's end-to-end encryption on top of RCS, and give that an orange bubble with a small padlock.


Clearly Messages is the most feature rich of all these protocols. But it's nice that RCS is here so I don't have hald the images I send end up not delivered.

Sep 23, 2024 7:32 AM in response to AlWeir

RCS (Rich Communication Services) is IP-based, meaning it requires Wi-Fi or cellular data for use. Traditional SMS/MMS messages do not support RCS, as those protocols rely on the carrier's standard text messaging service, which is not internet-based.


How Messages "sync" across Mac and iPhone:

  1. Messages (Apple’s messaging service): Messages works over the internet and is managed by Apple’s servers. When you use Messages, all messages are synced through iCloud, allowing you to see the same conversation on multiple Apple devices (iPhone, Mac, iPad). This works similarly to services like Facebook Messenger or Reddit messaging, where the service provider handles the synchronization across devices.
  2. SMS/MMS (Standard Carrier Messaging): Apple and Google don’t manage SMS/MMS messages since phone numbers are tied to your carrier, not the messaging service. To enable SMS/MMS messages on a Mac, Apple uses Text Message Forwarding, which forwards messages through your iPhone. Even if you type the message on your Mac, it’s still sent via your iPhone, over the carrier’s network.
  3. RCS (Rich Communication Services): RCS is IP-based, so in theory, it could send messages over Wi-Fi or cellular data. However, RCS requires a mobile phone number as the unique identifier, just like SMS/MMS. This means that while the message is transmitted over the internet, it is still tied to the carrier and your phone number.


For RCS to work on a Mac, like SMS/MMS, it would require Text Message Forwarding. In addition, the iPhone would need both a phone number (as the unique identifier) and an internet connection (Wi-Fi or cellular data). The iPhone acts as a relay for RCS messages, identifying the sender and receiver using the phone number, and then sending the message over the carrier’s RCS network.

Sep 21, 2024 6:26 PM in response to AlWeir

Yep. Another reason to use Signal/WhatsApp/WeChat/Telegram/Anything_Else.


I remember when RCS first rolled out. Carriers would not talk to each other over RCS. You could RCS from one Verizon customer to another Verizon customer. But Verizon→AT&T used SMS/MMS. I think the carriers were trying to do some kind of carrier lock in after they saw how Blackberry Messenger kept people on the Blackberry platform.


Apple took the right path and just bypassed the carriers completely. And Google could have done the same thing, if they didn't switch messaging platforms every few years. I remember going from Google Chat→Google Hangout→Allo/Duo→Google Messenger→RCS. People criticize Apple for not supporing RCS sooner. But nobody paid attention to RCS until Google started supporting it. And I'm sure Apple engineers sat there and said "I wonder how long this one will be around?" And I think they only got the carriers to support it because they agreed to run their own RCS servers, so there would be no cost to the carriers.


Meanwhile, Apple came out with Messages and stuck with, constantly updating it.

Nov 19, 2024 3:19 PM in response to amp68

For those that are still dealing with this, i think i may have figured out the solution. Once you're logged in to iCloud on both your iPhone and Mac, go into Messages settings on your phone and turn off "Send as Text Message", then make sure your Mac is turned on inside the Text Message Forwarding tab. After turning off iCloud and back on again, rather than showing up as "Sent at Text Message" for Android messages, it shows as "Text Message - RCS".

Jan 30, 2025 8:57 AM in response to amp68

Not sure if anyone mentioned this before, but I was having this same trouble with a new Mac mini and I realized that you need to have 'Find My Mac' enabled, and it wasn't.


On your phone, if you go into settings for the Messages app, you will see a toggle for 'Text Message Forwarding'. If you don't see your device in there, it may be because Find My... is not enabled for that device, and it needs to be. I went back to my device, enabled 'Find My' for it, and now messages are being sent and received properly.


Hope this helps!

Sep 22, 2024 12:11 PM in response to amp68

I've been having issues that I can send RCS just fine on my iPhone, but my MacBook Pro (even though it says "Text + RCS") it still doesn't send it and errors out. Luckily it syncs the fail to the iPhone and you can send it manually there via RCS or SMS and it seems to work fine. But I would say there appears be an issue on MacOS15 Messages not working properly with RCS.

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Messages on MacOS 15 not doing RCS

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