This was a difficult repair with a severely cracked screen, but after a ton of patience and time picking away and the cracked bits, I was able to remove the old screen and replace with the new. I wasn’t able to disconnect the battery as suggested, but I was careful in how I handled the open iPad Air. Having the right tools for the job was a big help too. I purchased the iOpener and Anti-Clamp after failed attempts with a heating bag (one filled with beans) and a hair dryer. I had other suction devices which helped too, but was limited by the cracker screen, even after covering it in tape. Thanks for the detailed walk through!