iPad 4 Wi-Fi Battery Replacement

If there's a piece of electrical tape covering the Wi-Fi antenna, speaker cable and the home button ribbon cable, remove it.

Lift up the flap retaining the home button ribbon cable ZIF connector.

Pull the home button ribbon cable out of its socket on the logic board. Do this with a pair of tweezers.

De-route the home button ribbon cable from its niche in the rear case.

A piece of tape is securing the digitizer ribbon cable to the logic board. Peel it back with a pair of tweezers.

Lift up the retaining flap on both digitizer ribbon cable ZIF connectors.

Loosen the adhesive under the digitizer ribbon cable with the flat end of a spudger.

Take out the digitizer ribbon cable out of its sockets on the logic board.

Peel back the digitizer ribbon cable. Separate the cable from the adhesive securing it to the rear aluminum case with the flat end of a spudger.

Take the digitizer ribbon cable out of its niche in the aluminum frame. Do this with your fingers.

Separate the front panel from the iPad.

There's a piece of electrical tape covering the headphone jack assembly cable connector. Use tweezers to peel back the tape and remove it.

With the tip of a spudger, lift up the retaining flap on both ZIF connectors securing the headphone jack cable to the logic board.

Push the flat end of a spudger underneath the headphone jack assembly cable and release the adhesive that's securing it to the rear aluminum frame.

Take the headphone jack assembly cable out of its socket on the logic board.

Disconnect the connectors from their sockets on the logic board:

Wi-Fi antenna cable.

Speaker connector cable.

Dock/Lightning connector cable.

Do not pry under the socket, but the connector. Prying on the socket can result in your iPad getting damaged.

There are four screws securing the logic board to the rear aluminum panel. Remove them.

Three 2.1mm Phillips screws

One 2.5mm Phillips screw

Take the board by the side opposite the lightning connector and gently pull the logic board away from the iPad.

The battery is glued to the aluminum frame with very strong adhesive.

You will be removing the adhesive underneath the battery, two inches at a time. This way, you won't put too much stress on the battery.

Make sure that you don't damage or puncture the battery while you're removing it. You can get poisoned if you ingest or inhale the toxic chemicals that batteries contain.

Push the flat end of a metal spudger under the battery. Do this near the bottom of the iPad.

Move the spudger about 3.81 cm underneath the battery and release the adhesive.

Note that the adhesive is extremely strong and that loosening it will require force. Do this carefully and patiently and make sure that the spudger doesn't slip.

Do the same thing as in the previous step: move the spudger about 5 cm under other adhesive strips.

Carefully move the metal spudger under the battery connector. This will release the adhesive that's securing the battery connector.

Keep releasing the adhesive near the top of the battery.

Push the metal spudger two more inches underneath the battery. Continue where the last pass left off.

Keep the spudger as flat against the rear case as possible the further your push it. This way you'll avoid bending the battery.

Do the same for the rest of the adhesive strips.

The process is the same as in the previous steps: loosen the adhesive on the strips by pushing the spudger about 10cm in.

Finally, for the last pass, insert the spudger all the way to the right edge of your iPad.

Do this for all the adhesive strips.

Check that the adhesive glue has been loosened from the battery.

Carefully lift the side of the battery and rotate it toward the right side of the iPad.

Loosen the remaining adhesive (if there's any) with the spudger.

Separate the battery from the iPad.