Is there a list of maximum file sizes for MMS messages for the major carriers in the US?


AJ Rice


Heads up: This article references Bandwidth's V1 platform experience, which is being shut down this year. Please visit Bandwidth's V2 API Platform Migration for more information. If you have any questions about your migration, don't hesitate to reach out to your Bandwidth Support Team!

  • ATT: 1MB
  • Verizon: 1.5MB
  • Sprint: 2MB
  • T-Mobile: 1MB

The file sizes above will generally be passed along to the wireless carriers, but due to differences in handsets, file types, and transcoding, Bandwidth recommends you only send attachments that are no larger than 500KB to ensure the best chance of delivery.

Article is closed for comments.