According to a study published in the journal New Media and Society boys much more use their mobile phones to play games, share photos and videos, listen to music and send e-mails much more than girls.
(Girls tend to use their phones primarily for talking and or text messaging, but the boys used their phones for talking and texting just as much as the girls, plus the gaming etc. Of course what the researchers didn't realise is the boys were phoning and texting their girlfriends.)