SMS and MMS on short codes
SMS and MMS are different payloads. File size, MIME type, text encoding, and device behavior can affect how the recipient sees an intended update.
Putting the guide into practice
Prepare one text-only example and one media example when MMS is requested. Test the approved sender on representative devices before approving the campaign creative.
- Supported formats
- Media settings
- Device tests
- Text fallback
Limits and review decisions
A media file that opens in a browser has not passed every carrier or handset requirement. Keep a text fallback ready for essential logistics.