Not sure about the phone apps, but I suspect any blocked videos/pics on a 'puter will be the result of your own security settings..
EDIT:... oops, sorry Squidd... just noticed your final line.... dunno then....
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)