The achievement, announced in an official blog post, indicates a potential shift in the American messaging landscape, where WhatsApp has steadily gained ground despite the longstanding popularity of Apple’s iMessage. The Meta-owned messaging app is extremely popular in Europe owing to its cross-platform compatibility.
For some reason, with the few people in my bubble who have installed Signal, we are sometimes missing notifications which never happens on Whatsapp. So you never know when the other end actually sees the message. That is a turnoff for most people and honestly for me too.
See Don’t kill my app! if you or the other affected people use Android
It happens both on Android and iOS