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.
Since not even iPhone users in Europe use iMessage I highly doubt anyone would use it outside the US.
I feel Europe is a lot more diverse than you think. In Norway, which have a fairly high percentage of iPhone users, iMessage is the most used - or at least I don’t know anyone who doesn’t use it by default.
A few friends chat are on Messenger or Snapchat. Signal / Telegram / WhatsApp etc are extremely rare.
And also as a Norwegian I don’t know a single person that uses iMessage.
Everyone I know are using Facebook messenger, Snapchat or WhatsApp.