Let’s not start a whole thread that will result in bizayon hatorah, as has occurred in other places where a bunch of geniuses felt the need to comment on items they know not of.
@zahavasdad I don’t believe the psak (by Rav Karelitz) was given. It seems to be a perversion of what he wrote in chut shani but there he says explicitly that the person needs to be chashud for davar hassur for it not qualify for hashava. He does say that it does not require hachraza which I will not pretend to understand but that is a far cry from saying there is no chiyuv hashava where the baalim are known. I will give you a link to the mareh hamakom not sure if the mods will post it – http://hebrewbooks.org/pdfpager.aspx?req=46218&st=&pgnum=335.
I think its a pretty big chiddush that we assume everyone who has a smartphone loses his chezkas kashrus. Having a smartphone does not make one an avaryan to my knowledge.