ios - is iPhone 5 always Returns False -

i using following code (in appdelegate) detect if device iphone 5

bool isiphone5 = cgsizeequaltosize([[uiscreen mainscreen] preferredmode].size,cgsizemake(640, 1136));

it returns false always. not first time used code. eventhe nslog returns {320, 480}

nslog(@"%@",nsstringfromcgsize([[uiscreen mainscreen] bounds].size));

note: app ipad , made universal. have 2 storyboards why need detection code.

thanks

this should work mate,

 bool isiphone5 = ([[uiscreen mainscreen] bounds].size.height == 568); 

and make sure use 4-inch simulator