iPad Air Digitizer Replacement
You will need following parts, a replacement Digitizer, a Hairdryer or Heat gun, a Suction cup, a Plastic Pry Tool, a Phillips screwdriver, and some Adhesive.
Turn-off your iPad Air and disconnect any cables or accessories attached to it.
Use the Hairdryer or Heat Gun to warm up the edges of the iPad Air's Screen. Be careful not to overheat the device or damage the LCD screen. Place the Suction Cup on the lower left corner of the iPad Air's Digitizer while continously heating it and gently lift it up using Suction Cup. Use the Plastic Pry Tool to carefully separate the Digitizer from the iPad Air's frame. Work your way around the edges of the device, being careful not to damage any cables or components. Once you have removed the Digitizer, disconnect all the cables that connect it to the iPad Air's logic board. (Very Importan). Gently Install the new Digitizer, making sure to align it with the iPad Air's frame and reconnect all the flex cables. Remove the film over the adhesive to secure the new digitizer in place. Also remove the film from under the Digitizer. You may leave the protective film on the outer side.
Reattach all the cables other Cables , and then power-on the iPad Air. Test the Digitizer. Make sure not to touch the inner side of the Digitizer. Keep in mind that these are general guide sand the specific steps may vary depending on the type of iPad Air you have and the replacement Digitizer you are using. It's also very important to note that replacement of the Digitizer can be a delicate and complex process, so if you're not sure and confident in your abilities, you should seek professional help.