iPhone 4 Battery Replacement

Back panel on your iPhone 4 has either two #000 Phillips screws or Apple's 5-Point "Pentalobe" screws. Make sure to check which screws are used; also make sure that you have the appropriate screwdriver in order to remove them.

Remove the two 3.6 mm Pentalobe or Phillips #000 screws next to the dock connector.

While reassembling the phone, we suggest you to replace the 5-point screws with equivalent Phillips screws. We have all the necessary tools and screws needed to replace the Pentalobe screws with Phillips screws.

Force the rear panel toward the top edge of the iPhone.

The panel will move about 2 mm.

Squeeze the rear panel with your fingers and lift it away from the iPhone.

2.5 mm Phillips screw that secures the battery connector to the logic board needs to be removed.

Sometimes it may happen that certain devices have two screws, one of them securing the contact pad which is located above the screw marked red in the photo.

Gently separate the battery connector from the ends closest to the top and bottom edges of the iPhone using an iPod opening tool.

Make sure to raise only the silver battery connector and not the black connector on the logic board. If you force the logic board connector, you might break it entirely.

Do not push against the contact clip.

Separate the contact clip from the iPhone.

Gently lift the battery out of the iPhone using the clear plastic pull tab.

When removing the battery with the plastic pull tab you need to be very careful. On some devices, Apple tends to use too much glue, making it almost impossible to remove the battery in this way (tab might break due to excessive force).

You could use the iPod opening tool for batteries that won't move, however you need to take extra care while doing so.

We suggest you to try to take the battery out from the right-hand side because no glue is used on this side.

Remove the battery.

Prior to reconnecting the battery connector, check if the pressure contact (marked red) is positioned next to the battery connector in the right way.

Before reassembly, use de-greaser (96% ethanol alcohol can also be used, but contacts must be completely dry when done) in order to clean all metal-to-metal contact points on the pressure contact as well as its contact point on the rear panel. The natural oils on your fingers may cause wireless interference issues.