iMessage
If you have mostly iOS-using friends, the mechanics of those green text bubbles probably isn’t something you think about very often. But as soon as you switch to an Android, you’ll show up as a green bubble on other peoples’ iPhones. Not a big deal, right? Well…
iMessage is actually much more akin to an internet messaging app like WhatsApp or Facebook Messenger than SMS text messages. When you switch to Android, you’ll notice the difference. Not only is iMessage end-to-end encrypted and better with image sending, but it just works a lot smoother than SMS and MMS — two technologies that are notoriously bad at what they do.