Quick answer. Use RCS instead of SMS when your audience is RCS-capable and the message benefits from branding, rich media, interactivity, or measurement, which covers most marketing and many transactional flows. Promotions with images, order and delivery updates with tracking, appointment reminders with confirm/reschedule buttons, loyalty and rewards, and two-way support all perform better as RCS. The branded, verified format also matters most exactly where trust matters, offers, account alerts, and fraud notifications.
A simple rule: lead with RCS for anything where a logo, an image, a button, or a read receipt makes the message work harder, and let SMS handle the fallback automatically. You don't have to choose per audience, the system sends RCS where it can and SMS where it can't.
When should I use SMS instead of RCS?
Quick answer. Use SMS instead of RCS when universal reach and simplicity matter most: messages that must reach every possible device regardless of RCS support, plain one-time passcodes and critical alerts where a single line of text is enough, and recipients who aren't RCS-capable. SMS is also the automatic fallback for RCS, so in practice you don't pick SMS over RCS, you send RCS-first and SMS catches everything that can't receive rich messages. Pure plain-text, reach-everything use cases are where SMS still leads.
There's rarely a reason to deliberately downgrade an RCS-capable recipient to SMS. The real role of SMS in a modern program is universal coverage and guaranteed delivery, the safety net beneath RCS, not a competing choice.
Can I use both RCS and SMS?
Quick answer. Yes, using both is the recommended approach, and it's how RCS is designed to work. You send RCS-first to everyone, and any recipient who can't receive it (wrong device, no RCS support, no data) automatically gets the message as SMS or MMS instead. This gives you RCS's richness and engagement where it's available and SMS's universal reach everywhere else, in a single send, with no separate campaigns to manage. A good platform handles the capability check and fallback for you.
This "RCS-first with SMS fallback" model is the practical answer to almost every "RCS or SMS?" question: you don't choose, you layer. SimplyRCS does the capability detection and fallback automatically, so one message reaches the whole list at the best experience each device supports.
Key facts
- RCS-first with automatic SMS/MMS fallback delivers richness where possible and universal reach everywhere.
- One send, no duplicate campaigns, the platform handles capability detection and fallback.