Samsung has released a new video in support of Google’s #GetTheMessage campaign which calls for Apple to adopt RCS or “Rich Communication Services,” the cross-platform protocol pitched as a successor to SMS that adopts many of the features found in modern messaging apps… like Apple’s own iMessage.
Not entirely sure what you’re asking but
iOS does not allow you to use any other messaging app for SMS. This is surely intentional to lock you into iMessage.
If you’re messaging iOS --> iOS your “text” messages (SMS) are automatically upgraded to the iMessage protocol, and there are a wide variety of features that are enabled without the user downloading any other apps or switching the protocol. It just happens.
You can turn off iMessage and you’ll be sending texts as regular SMS.
…why would you do that?
No clue, just saying you’re “allowed” to use SMS if it’s important to you. But I might have misinterpreted you!
Above commenter was saying that you’re not allowed to use any other app besides the default messages app to send SMS on an iPhone, so a third party can’t just come in with an SMS app that also implements RCS so everyone can be happy
You can send SMS on iPhone with the Google voice app. Yes it would be from a different phone number than your SIM, but it works.
The other replies answered it.