How the iMessage and SMS (MMS) limit works
MMS limits come from carriers, not from your phone. Many allow around 1 MB, some allow a few MB, and a few allow less. The 1 MB preset works almost everywhere. If you know your carrier allows more, choose a custom size.
iMessage, used between Apple devices, accepts much larger attachments. Use the 100 MB preset there, or send the original if it is already within limits.
For MMS, photos are best. A short video is possible, but expect a small, low-resolution result.
Sizes we target
- MMS and SMS, 1 MB: Carrier MMS limits are often 1 MB or less. This is the safe size for green-bubble texts. (typical size, not an official limit) (checked 2026-11-09)
- iMessage, 100 MB: iMessage between Apple devices accepts large attachments, roughly up to 100 MB. (typical size, not an official limit) (checked 2026-11-09)
We aim below each limit by the margin shown. Use the menu above to switch.
Tips
- For a group text with Android and iPhone members, treat it as MMS and aim for 1 MB.
- Crop before compressing. Fewer pixels means more quality per byte.
Questions people ask
What is the MMS size limit?
It varies by carrier, often around 1 MB. We use 1 MB as a safe default.
Why does my video look blurry in a text?
The carrier compresses it again. Sending a file that already fits means the carrier does not have to.
Related
- Compress an image to 1 MBImage size
- Send a long video on WhatsApp without it being butcheredDestination guide
- Get a video under Signal's attachment limitDestination guide
Limits change. We link the official page wherever there is one, and the safety margin means a small change is unlikely to matter. Last updated 2026-11-09.