Roomie complains about getting blank MMS messages on thier phone from random numbers. I think its a hack and told him to wipe thier phone. Any ideas? Only information I am finding on this subject is old articles relating to stagefright back around 2015.
Since it is election year in the US a lot of people are sending texts that have no text and only a picture. If your friend is using a phone or messaging app that doesn't accept MMS (or has pictures somehow blocked in the settings) then these might show up as empty texts. Also, I think MMS requires data so if the phone has no data plan and is not on a wifi network then the pictures won't show.