iPhone 4 / 4s screen replacement

Hi folks!

So I just purchased two LCD/Digitizer kits for my own iPhone (4s) and a friends. I've only discovered now, however, that the insides of this phone are slightly different.

Moments of google confirm that my friend's phone is an iPhone 4, not a 4s like my own.

So here I am with a spare iPhone 4s LCD screen and my question is: Any hopes of a compatibility? I'm assuming probably not, but I figured I'd ask before I broke the news to my poor friend.

Thank you! :)

Elías