Of course I can’t find any pictures through Google Image searches to prove my point here, but I have a gripe that I need to get off my chest.
I absolutely CANNOT STAND when movies show characters using iPhones incorrectly.
Surely you’ve noticed that often times, when a character takes a call on their iPhone, they are very clearly NOT taking a call. I can see the light on the screen, and I can tell when the phone is clearly on the main menu. Getting the phone screen would not be hard to fake – just take a screenshot and open it up in the Photos app. Or just leave a white screen up or something!
When I can tell that the character is not on a call, it highlights the artifice of the scene and disrupts the illusion. I’m instantly taken out of the scene.
So, please, filmmakers. This is not a hard thing to get right. I’m not saying you should actually endure the hassle of making a call to the phone in the shot. Just don’t presume the audience watching is stupid enough not to notice that the phone is clearly not making a call.
Marshall and the Movies 
Oddly enough this is something I never really took notice of. I use to get annoyed at scenes where people did the faux-typing thing on dell computers, but I guest I simply brushed it off the use of cellphones as mere product placement. Definitely going to keep a closer eye on it now though.