Are text messages used in B2B stuff? Any use cases that you can think of?
Just been curious about it today.
For everything else casual, people use whatever apps are popular in their region - whatsapp, imessage, slack, discord, etc. All do relatively the same thing, but should not ever be relied on as the primary method of official communication. All of them suck for record keeping.
It does have a single advantage: most phone numbers support it, and you can send messages to people without prior coordination of which app to use.
But once you are more familiar with recipient, pretty much any app will work better.