Quick answer. RCS and MMS can both send media, but RCS does it in far higher quality with interactivity, while MMS is the older, lower-resolution, universally compatible option. MMS attaches an image or short video to a text but compresses quality, caps file size, and costs more than SMS. RCS sends full-resolution media, carousels, and tap-to-act buttons over the internet, with branding and analytics — and falls back to MMS/SMS when a device can’t receive it.
| Dimension | RCS | MMS |
|---|---|---|
| Media quality | High-resolution image & video | Compressed, size-limited |
| Interactivity | Buttons, carousels, replies | None |
| Branding | Verified sender | Anonymous |
| Cost (US) | Carrier-rate, per message | Typically higher than SMS |
| Reach | RCS-capable devices (with fallback) | Nearly universal |
For media-rich business messages, RCS is the clear upgrade. MMS persists as a fallback and for the rare device or carrier that can’t do RCS.