Hey, is the contact disconnected atm?[br]
If you disconnect it and that stops the bootloop then there is a fault in your front camera flex/als/proximity.[br]
You need to replace it.[br]
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It controlls the screens brightnes, the front camera, the function where the screen gets dark when lifting it to your ear in a call, the earspeaker function beacuse that flex is the only thing that connects the earspeaker to the motherboard.[br]
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When you set the contact down to the motherboard besure that you get it down on both right and left side, sometimes it only gets down on one side.