What are the maximum file sizes for MMS messages for the major carriers in the US?

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Jessica Murray

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Carrier Long Code Short Code Toll-Free
ATT 1 MB 1 MB 525 KB
Verizon 1.2 MB 1.2 MB 525 KB
T-Mobile 1 MB 1 MB 525 KB
Sprint 2 MB 2 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.

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