iPhone 3GS Battery Replacement

If your display glass is cracked, keep further breakage contained and prevent bodily harm during your repair by taping the glass.

Lay overlapping strips of clear packing tape over the iPhone's display until the whole face is covered.

• This will keep glass shards contained and provide structural integrity when prying and lifting the display.

Remove the two 3.7mm Phillips #00 screws from the dock-connector end of the iPhone.

Remove the metal handle from the suction cup. It's easier and safer to grip the suction cup's base instead of the metal handle.

Use a small suction cup near the Home button to gently pull up the bottom portion of the iPhone's display assembly.

Rotate the display assembly up until it is at an angle of approximately 45 degrees.

Continue to hold the display assembly with one hand, and use your other hand and a spudger to disconnect the black ribbon cable labeled "1". (Cable 1 is for the display)

• Be careful to insert the spudger from the left, as shown in the picture (UNDER THE RIBBON). If you try to pry up the ribbon from the right, you could damage the ribbon connector and need to replace the display!

Rotate the display assembly up until it is roughly vertical. This will allow easier access for disconnecting the remaining cables.

Use a spudger to disconnect the black ribbon cable labeled "2". (Cable 2 is for the capacitative touch panel)

Use a spudger to flip up the white plastic tab holding the ribbon cable "3" in place. The white tab will rotate up 90 degrees, releasing the ribbon cable.

Slide the black ribbon cable out of its connector, and remove the display assembly from the iPhone.

Insert your SIM eject tool or a paper clip into the hole next to the headphone jack.

Press down on the tool until the SIM card tray pops out.

Grasp the SIM card tray and slide it out of the iPhone.

Use a spudger to disconnect the ribbon cable labeled "4."

Use a spudger to disconnect the ribbon cable labeled "5."

Use a spudger to disconnect the ribbon cable labeled "6."

Remove the following 8 screws:

• Five 2.3 mm Phillips #00 screws with partial threads securing the logic board to the rear case.
• Two 2.3 mm Phillips #00 screws with full threads securing the logic board and camera.
• One 2.9 mm Phillips #00 screw from beneath the "Do not remove" sticker.

Note for re-assembly:

• The screw that goes next to the camera (bottom right orange highlighted screw) also has a metal strip that holds the camera in place.
• Remember to put this strip back in place before you insert the 2.3 mm Phillips #00 screw with full thread next to the camera

Use a spudger to gently pry the camera up and out of its housing in the rear case.

Use a spudger to gently pry up the end of the logic board closest to the dock connector.

Slide the logic board towards the dock connector and out of the iPhone.

When replacing the logic board after installing battery, connect the camera to the logic board before inserting it into the case. Then make sure to set the top section of the logic board (where the SIM tray is) in place before settling the rest of the board in place. This is important, as sometimes the SIM card slot will not align into place. Once the top section is in place, the bottom section can be maneuvered into place. You will know the logic board is correctly installed when the SIM tray is aligned with the opening in the iPhone case and the camera module seats neatly into its place.

Use a spudger to pry the battery up from the rear case. The battery is attached with an adhesive strip around the perimeter of the battery. To prevent the battery from bending during the removal process, we recommend against using just the plastic pull-tab . *Note: Removing the battery is NOT necessary for replacing the GPS antenna. It merely gives you more space for removing the headphone assembly (which is also unnecessary to completely remove).