Sending very short videos from my iPhone to my daughter's iPhone, they showed up about an inch tall and couldn't be made any larger. She was in the same house. After she got home to another state, I sent her two more small ones, and again, she was unable to view them. So tiny! I know about the problems between iPhones and Androids, so please don't include that in your answer. Thank you!
iPhone XS Max
The size limit of attachments is determined by your service provider. For more info, see:
Share photos and videos on iPhone - Apple Support
Send and receive photos, videos, and audio messages on iPhone - Apple Support
The size limit of attachments is determined by your service provider. For more info, see:
Share photos and videos on iPhone - Apple Support
Send and receive photos, videos, and audio messages on iPhone - Apple Support
As I stated, these were videos approximately 13 seconds long. Should not have a problem with size.
iPhone to iPhone videos
