I dropped my iPhone 4 a while back shattering both the front and back glass. I was wanting to fix both before I give it to my brother. I have found replacement glass for the back here for $13. When looking at replacement screens though, there seems to be a lot of various options. So I am trying to find out what I need to buy to fix it. It looks like you can buy just a digitizer like This one for $13 or there are also complete LCD, Digitizer, and Glass like This one for $90 Is there any way to tell what I will need? If it helps my screen still works, and I am still using it to this day. It just has spiderweb cracks all over it. I would assume I would just need the digitizer since its shattered, but I want to double check. Thanks for any help!