[header] How to fix an iphone screen [title] Remove the screws from the base of the phone. [step] Use a very small star-shaped (pentalobe) screwdriver to unscrew the two screws at the base of the phone. The base is right below the home button. 
Take care not to drop the small screws on the floor after you've removed them. [substeps] A very small phillip's screwdriver won't work to remove these screws.