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how much less is fixing screen at local shops compare to apple store usually? is there a kit or self-kit made by apple you can buy to repair instead? what material is usually used at local shops? would you always lose face id when fixing screen? anything else helpful to know? whats best guide online for this whole topic? whats best youtube vid on everything touchscreen, like if repairing makes touchscreen lose touch abilities, etc does crack screen make ipad have software bugs and problems?

2a. I would recommend referencing the guides in part 5 of this answer to see what parts you need. 2b. There are no kits made by Apple for you to repair your device. Apple would rather have you take the device to an Apple Store or Apple-Authorized repair center, or better yet, buy a new device. This makes them more money and/or allows them to limit what repairs the repair centers can do. 3.The quality of displays used by repair shops vary. Keep in mind that lots of repair shops would like to use new Apple genuine screens, but Apple will not sell genuine parts to any non-Apple Certified repair centers(Same reason as stated in 2b). 5.I would recommend the iFixit guides for replacing the screen and digitizer. 7.A cracked screen can send incorrect touch inputs to the iPad logic board, making the iPad go haywire.