Scratches on iPhone 4S screen?

I bought a white iPhone 4S a few days before christmas. I have been using it everyday since. On boxing day I got a case and a protective screen cover. I placed them both on, but within a few days the screen cover had lots of scratches and just wasn't very good so I had to take it off. I then put the phone in my empty pocket whilst I was out; yet I was only at the cinema so It couldn't of got that damaged. I took it out and there was a huge scratch down the middle of my phone. Yes, it was only a hairline scratch but still, it was long and accompanied by a few other smaller scratches. Now, I feel as if the scratch has gotten deeper? It has affected the screen ever so slightly, as you can see when it is switched on a light fuzzy line down the middle. I sometimes take the back case off as it adds a lot of weight, yet have no scratches on the back at all. Do all iPhone 4S screens scratch so easily? And is there anything I can do about them?

They crack easily, I'm not sure about scratches (I dropped mine once and got three long, diagonal cracks as a result). I'm not really sure what your problem is, but you can go to an appointment at an Apple store and many other places to get a replacement screen glass put on, so you can get new glass without any cracks/scratches, and you don't have to buy a whole other iPhone. It's usually not that expensive either, so that's probably your best bet.