If someone sent you a link to a video via MMS rather than the file itself, these apps are highly rated for grabbing that content:
MMS videos are usually heavily compressed (low resolution, short duration) due to carrier file size limits (typically 300KB–1.2MB). When you receive an MMS video, it's often a streaming link or a tiny .3gp / .mp4 file. Your goal is to save that file permanently to your device storage. mms video download top app