Phone · Apple · iPhone 4
Apple iPhone 4 Battery Replacement
Battery Replacement guide for the Apple iPhone 4
Before you begin
Tools
- Phillips #000 screwdriver
- Pentalobe P2 screwdriver
- Plastic prying tool
- Spudger tool
- Tweezers
Parts / materials
- Replacement iPhone 4 battery
- Battery adhesive strips
- Isopropyl alcohol
Safety
- Power off the iPhone completely before starting disassembly.
- Do not puncture or bend the lithium-ion battery during removal.
- Wear safety glasses to protect against small metal components and debris.
Overview
Step-by-step
- 1
Power off the iPhone
1 minPress and hold the top power button until the slider appears. Slide the toggle to turn off the iPhone completely before proceeding.
- 2
Remove the bottom dock screws
2 minUse a Pentalobe P2 or Phillips #000 driver to remove the two screws located on either side of the dock connector port.
- 3
Slide the rear panel upward
1 minPlace your thumbs on the back cover and push gently upward toward the top edge. The panel will slide up about 2 millimeters.
- 4
Lift off the rear panel
1 minGrasp the top edge of the loosened rear panel and lift it off the chassis. Set the rear panel aside in a safe spot.
- 5
Unscrew the battery connector bracket
1 minUse a Phillips #000 screwdriver to remove the single 2.5 mm screw securing the battery connector to the logic board.
- 6
Detach the grounding clip
2 minUse tweezers to carefully lift out the small metal grounding clip located under the battery connector screw point.
- 7
Disconnect the battery connector
1 minInsert the flat edge of a spudger beneath the battery connector and gently pop it straight up off the logic board socket.
- 8
Expose the pull-tab adhesive
1 minGently pull up the clear plastic tab located on the exposed side of the battery.
- 9
Pry the battery out of the frame
2 minInsert a plastic prying tool along the right edge of the battery and lift gently to break the factory adhesive bond.
- 10
Remove the old battery
1 minLift the original battery completely out of the device frame. Recycle or dispose of the old battery properly.
- 11
Clean the battery compartment
2 minApply a small drop of isopropyl alcohol to a clean cloth and wipe away any leftover adhesive residue inside the metal recess.
- 12
Prepare the replacement battery
2 minPeel the protective backing off the new adhesive strips and press them firmly against the back surface of the replacement battery.
- 13
Position the new battery
2 minLower the new battery into the battery well, ensuring the flexible power cable aligns properly with the logic board socket.
- 14
Reinstall the metal grounding clip
2 minUse tweezers to place the tiny metal grounding clip over the logic board screw hole near the battery connector.
- 15
Connect the battery terminal
1 minAlign the battery connector over its logic board socket and press down firmly until it snaps into place.
- 16
Secure the battery connector screw
1 minInsert and tighten the single 2.5 mm Phillips #000 screw through the grounding clip and battery bracket.
- 17
Reattach the rear panel
1 minPlace the rear cover onto the chassis leaving a 2 mm gap at the top, then slide it downward until flush with the edge.
- 18
Reinstall the dock screws
2 minDrive the two bottom screws back into the dock connector port to secure the rear cover.
After your Apple iPhone 4 battery replacement
Power the iPhone 4 back on and test the battery replacement function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Apple iPhone 4 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Apple iPhone 4 repair context in the encyclopedia, or open related DIY guides.
