I followed the Ifixit directions to taking out the battery and replaced the battery with the one that Ifixit sent me.everything went back in right but after two minutes of fighting to connect the Display back into it's connection the Display would not turn back on. I can hear the cell phone turning on but I get nothing on my screen. I've taken ithe Display off the phone four times and put it back on and I still get nothing on the screen. I don't have another Google Pixcell 7 Pro cell phone to test the Display or the connection. What can I do next?

I too, like Mason, I attempted to install a Battery in a iPad Air First Generation with WiFi, using all the iFixit tools, but after two hours of tearing down the iPad and then installing the new Battery, the system started up and then after waiting a whole day the system did not charge up and there for it would not boot up. I took it back apart, and then I tried a known battery from a iPad that was working, and installed it into that iPad, but it still did the same thing. I installed the new battery that was bought for the client's iPad into my working one and it started charging up and my iPad was working. I have no idea what to do about that Tablet now. Should I trash it and suggest to the client to purchase another used one. They came to me to fix theirs because they could not afford to purchase a brand new one. My question to iFixit Agents, What can I do next?