how can i fix my I9+ phone?

I bought this phone from hong kong via ebay. I've had it a week and clumsily cracked the outer screen. Now the screen memo slides but i cannot select anything. If I find someone that sells the outer screen will it allow me to select an option or will the cracked screen have broken the phone altogether? Also does anyone know where i will be able to get a screen for the I9+ model from hong kong? I have been told by shops the screen isn't the same as the english I phone??