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Recently I went to the gym and I dropped weights on my iphone 6 Accidentally, it got cracked and the phones was still working after that. But after replaced the screen Iphone 6 won’t turn on the screen but the power was on, when I plugged into computer it keep making charging sounds every 5 seconds. I tried to unplugged the battery and plug it back still doesn’t turn on the screen. I changed new battery but still won’t turn on. Any tips ?

Have you tried pressing power & home button together for about 10 seconds? Is the old one working, or was that completely destroyed? Also, check you haven’t bent the connector for the lcd, these are easy to bend due to the length of them.