Yep, I don't own a Smartphone, just an old fashioned cellphone, so I didn't really understand a lot of this. Nor has it made me want to get one either. Like many films on here it's got lots of bad reviews from strangely bitter people who when you look at their review histories never give anything over 3! But I don't feel it deserves them as it certainly kept my attention throughout and I'm glad I watched it.