[kelnos]

Defaults matter. While I've gotten some of my friends and family members to install and use Signal, I still have more chats via SMS/MMS (and more recently RCS, since Apple finally started supporting it) than I do on all other messaging apps combined.

[diego_sandoval]

Where (and why) is that?

I'm from Chile, and the last time I sent an SMS (or heard of anyone sending an SMS) must have been like 12 years ago.

Ever since then, everyone has used Whatsapp or Telegram instead.

[lxgr]

Probably the US. SMS, MMS, and now RCS are still ubiquitous there – and only there, as far as I know.

[hashworks]

If you decline to use WhatsApp you need to use SMS for a lot of contacts in Germany. Or RCS since the latest iOS update.

[sincerely]

in NA, SMS is still dominant. Eu+Sa+india use whatsapp, china/japan have their own apps

[theshackleford]

This is likely to differ greatly by demographic. I don’t know literally anyone who uses SMS/MMS. The only SMS message I’ve received in years are automated services/spam.