MMS FAQ
What is MMS?
Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network. MMS allows the sender to send messages with media files, such as pictures, videos, and audio files all in one message or separately in individual messages.
Does PhoneEasy support MMS messaging?
Yes, we support MMS messaging on U.S. and Canadian local long code and toll-free phone numbers. MMS can only be sent and received within the U.S. and Canada, and is not supported outside of these countries at this time.
Supported MMS file types
Note: .pdf files sent from iPhones to non-iMessage destinations, or from/to older Samsung devices (Android 9 and earlier), are not supported.
What is the maximum supported file size I can send?
The maximum size you can send outbound, including all attachments per MMS message, is 525KB.
What if I attempt to send messages larger than 525KB?
If the total size of MMS message media/attachments exceeded 525KB, you’ll get a 4411 "rejected-message-size-limit-exceeded" callback error.
What is the maximum supported file size I can receive inbound?
Most operators have a maximum payload size of 1.5MB, but it may be larger depending on the handset and operator. Bandwidth doesn’t perform any transcoding or downsizing, however, some devices and even some carriers do transcode/compress inbound MMS.
For example, if you test a 10MB PNG file sent inbound to a toll-free number, it's received as 432KB on iPhone/AT&T, 172KB on iPhone/T-Mobile, 999KB on Android/T-Mobile, and 172KB on Android/Verizon. So, in general, expect a maximum of 1.5MB files inbound.
What happens if I send an unsupported file type?
If you send an unsupported file type, it won’t be received on handsets. You also won’t receive an error message. For example, unsupported file types, such as PDF and vCards, which are under 525KB in total size, will be attempted to be sent and you’ll be billed for these attempts. It’s recommended to implement code to check for valid file types only.
Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network. MMS allows the sender to send messages with media files, such as pictures, videos, and audio files all in one message or separately in individual messages.
Does PhoneEasy support MMS messaging?
Yes, we support MMS messaging on U.S. and Canadian local long code and toll-free phone numbers. MMS can only be sent and received within the U.S. and Canada, and is not supported outside of these countries at this time.
Supported MMS file types
Note: .pdf files sent from iPhones to non-iMessage destinations, or from/to older Samsung devices (Android 9 and earlier), are not supported.
What is the maximum supported file size I can send?
The maximum size you can send outbound, including all attachments per MMS message, is 525KB.
What if I attempt to send messages larger than 525KB?
If the total size of MMS message media/attachments exceeded 525KB, you’ll get a 4411 "rejected-message-size-limit-exceeded" callback error.
What is the maximum supported file size I can receive inbound?
Most operators have a maximum payload size of 1.5MB, but it may be larger depending on the handset and operator. Bandwidth doesn’t perform any transcoding or downsizing, however, some devices and even some carriers do transcode/compress inbound MMS.
For example, if you test a 10MB PNG file sent inbound to a toll-free number, it's received as 432KB on iPhone/AT&T, 172KB on iPhone/T-Mobile, 999KB on Android/T-Mobile, and 172KB on Android/Verizon. So, in general, expect a maximum of 1.5MB files inbound.
What happens if I send an unsupported file type?
If you send an unsupported file type, it won’t be received on handsets. You also won’t receive an error message. For example, unsupported file types, such as PDF and vCards, which are under 525KB in total size, will be attempted to be sent and you’ll be billed for these attempts. It’s recommended to implement code to check for valid file types only.
Updated on: 24/05/2024
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