Supported Mobile Operators and Limitations

The OpenMarket MMS APIs support both MT and MO MMS messages on the mobile network operators listed in the table below. For sending messages in other regions, please contact your account manager.

MMS message size

The size of an MMS message is the number of bytes of the entire message, including all headers and the multimedia content.

Recommended file size

IMPORTANT! If your campaigns are time sensitive, limit the file size to 150 KB.

Mobile operator

ID

Maximum file size

Supports delivery receipts?

United States

AT&T

383

1 MB

Yes

MetroPCS (GSM)

788

1 MB

Yes

Sprint

34

2 MB

Yes

T-Mobile USA

79

1 MB

Yes

US Cellular

56

500 KB

Yes

Verizon Wireless

77

1.2 MB

Yes

United Kingdom

Vodafone

350

300 KB

Yes

T-Mobile (EE)

348

300 KB

Yes

Virgin (T-Mobile) (EE)

348

300 KB

Yes

O2

347

300 KB

Yes

3

474

300 KB

Yes

Orange (EE)

349

300 KB

Yes

Ireland

3

608

300 KB

Yes

Australia

Telstra

114

400 KB

Yes