Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...
It’s not about that. It’s about moving people over.
You know why RCS is picking up steam? Because it’s 1 app. If the person you’re talking to has RCS, you’ll send messages via RCS. If they don’t, it’ll fall back to SMS. If RCS was a separate app from SMS, adoption would be really low.
Older people especially don’t want to juggle 2 apps. If you get your dad on signal, and then his friend who uses SMS messages him, he’ll be back in his SMS app and won’t go back to signal, meaning the next time he messages you, or anyone else that has signal, he’ll instead just send an SMS since he’s already in the SMS app.
Removing SMS fallback was a surefire way to kill adoption of signal.