Apple confirms the blue versus green bubble battle won't be over just because of RCS. The blue iMessage text bubble is meant to tell the user when they are talking to another iPhone user.

Furthermore, the article quotes a 2013 email from Apple’s Craig Federighi, in which he presents his opposition to an internal suggestion to bring iMessage to Android.

Blue bubbles versus green bubbles - in the world of texting, it's the difference between iPhone users and people with Androids. It's like a bubble culture war. People have been called out.

A support page on Apple's website says the green text bubbles come from users who send Short Message Service (SMS) messages. Apple's iMessage is only available for its products including iPhone ...

Double-tap or press on a blue text bubble to find these options. A little heart, thumbs up or down, "haha," exclamation marks or a question mark will appear.

And now that we can text back and forth from anywhere, at any time, at a moment’s notice, we seem to need, above all else, lol to make sure that we’re fully understood. Lol.