Responding to unknown numbers confirms your line is active, leading to more spam.
If the text shows a link (e.g., bit.ly/21072mp4 ) instead of a playable video preview, treat it with extreme caution. Community Warnings 21072mp4
Most cellular providers limit video files sent via SMS/MMS to roughly 3.5 MB . Responding to unknown numbers confirms your line is
If you received a message containing or a similar link from an unknown number, it is very likely a phishing attempt or malware . 21072mp4
How to Send a Long Video Through Text: 2 Methods - Dropbox.com
Because of these limits, videos sent directly through text are often heavily compressed and look "grainy."