: Keep files under 600 KB for the widest carrier support and to avoid delivery lag.
: Recommended video length is under 30 seconds for standard MMS messaging. Resolution & Aspect Ratio : MMS Livemp4
Using MP4 clips in messaging can significantly boost engagement compared to standard text-only SMS. MMS Messages API Guide - Vonage : Keep files under 600 KB for the
is generally preferred for mobile viewing as it utilizes the full vertical screen. MMS Livemp4
A resolution of is a common standard for balanced quality and file size. Strategic Use Cases for MMS Video