My hair is getting caught in a seam between the casing and the screen

What kind of advice were you expecting from other users? None of us are capable of changing the design of the iPhone you already own so that your hair doesn't get caught. The only thing you can do is place some kind of barrier between the seam and your hair or buy a different phone. If you would like to let Apple know that the iPhone's current design is causing you problems, you can send your feedback here: http://www.apple.com/feedback/iphone.html

bnemati wrote:

That wasn't helpful.... I know I can use covers but this is not the solution to this problem... it is a BIG problem.. I never use covers for various reason. What you are saying is that iphones cannot be used without cover because it pulls your hair? That would be so embarrassing for Apple.

then get a hair cut so it doesn't get caught in the seam...

Buy a case that covers the seam. You can start looking for some here: http://www.apple.com/shop/iphone/iphone-accessories/cases-protection