Silverhill Tools Pentalobe Screwdriver Size TS1 for iPhone 4 (2nd generation)
Sometimes a fix can be as simple as being able to disassemble your phone.  These screwdrivers are made of high quality S2 steel, the best steel Silverhill Tools uses in its tool products.  Also included is a suction cup which can be used to pull your screen out of your phone after you remove the screws.  A small pry pick is also included.  In late 2010, Apple switched the screw style on the iPhone 4 from a standard Phillips screwdriver to a 5 point star screwdriver size TS1. Before selecting this screwdriver for purchase, all customers should look at the bottom of their iPhone 4 and see if it has a "plus" or a "star" screw.