Replacing the earpiece speaker
Rotate the phone onto its front side so that the LCD screen is facing away from you.
Remove the battery by pressing down on the battery release button while sliding the battery downwards.
Remove the four small black screws that secure the back phone panel using the Phillips #00 screwdriver.
Carefully separate the front and back panels by gently prying them apart. Start at the bottom of the phone (near the AC charger input).
Using your nails, tweezers, or any precise grabbing tool, pinch the antenna wire connector (clear plastic plug) and pull gently. It should pop out rather easily.
Put aside the back panel. You will only be working with the front panel from here on.
Using a SL 1.5 flathead screwdriver (or any small prying tool), pry the speaker from the plastic front cover.