If there's a piece of electrical tape covering the Wi-Fi antenna, speaker cable and the home button ribbon cable, remove it.
Pull the home button ribbon cable out of its socket on the logic board. Do this with a pair of tweezers.
A piece of tape is securing the digitizer ribbon cable to the logic board. Peel it back with a pair of tweezers.
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.
Push the edge of the plastic opening tool between the plastic and aluminum frames close to the one of the corners.
Move the plastic opening tool carefully along the iPad's edge and release the adhesive.
Keep sliding the plastic opening tool along the left edge of the iPad in the same way as in the previous step.
When you get near the bottom left edge, rotate the plastic opening tool around the corner and keep moving it along the bottom edge.