Please choose the correct ending to complete the given sentence: Computers and Electronics: [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.

Ending1: [substeps] The screws are usually 7-8 inches (23-31 cm) long. It's not necessary to replace the screws that are currently under the home button. Ending2: [title] Move the screen out of its housing. [step] To quickly unscrew the phone and remove the screen, have a helper hold its base in one hand. Ending3: 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. Ending4: Be very gentle and use a few light squirts to smooth it down. [substeps] If you don't have these removal tools on hand, or don't use a steel-head screwdriver to remove the screw, you can also try hard-nosed pliers.

Answer format: ending1/ending2/ending3/ending4