So, femtocells
are they like fembots?
Security researchers have detailed further flaws in the femtocell base station technology supplied by mobile carriers to consumers and small businesses as a means to improve 3G mobile connectivity in buildings by taking advantage of existing broadband connections. Security shortcomings in Vodafone's femtocell signal booster …
This seems to describe forcing corrupted images onto other people's kit. Wouldn't it be easier to just get your own kit (claiming legitimate use so it gets connected), make it available for the public, then bung the malware on it? That way you see everything in the message stream for every phone in the area.