Bandwidth Dashboard
911 Access Dashboard
What are the maximum file sizes for MMS messages for the major carriers in the US?
Follow
Jessica Murray
| Carrier | Long Code | Short Code | Toll-Free |
| ATT | 1 MB | 1 MB | 525 KB |
| Verizon | 1.7 MB | 1.2 MB | 525 KB |
| T-Mobile & Sprint | 3 MB | 1 MB | 525 KB |
| US Cellular | 500 KB | 500 KB | 525 KB |
The file sizes above will generally be passed along to the wireless carriers. However, due to differences in handsets, file types, and transcoding, we recommend you send attachments no larger than 500KB to ensure the best chance of delivery.
Article is closed for comments.