After screen replacement phone won't turn on
I've replaced the whole display from my Iphone 6. I didn't disconnect the battery, so I put the flex cables in turned my phone on and it worked perfectly, then i wanted to put the metal shield on and afterwards my phone wouldn't turn on anymore. It doesn't find it on iTunes, I tried again and again the cables are in the right positions, the screws where never mixed up or something I also tried the restore mode and dfu mode nothing. When I put my phone on charge it gets warm so I think it's still alive?
Thank you very much for every help!
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