iPhone 5S - Apple Logo, & Black Screen Shows Up Stuck
My dad has this iPhone 5S that had been water damaged for a long time. I cleaned all the parts with 90% isopropyl alcohol. When I boot up the phone, the dead battery logo shows up, then the apple logo and then a black screen until I unplug it, it stops working. What's the issue? Also I tried unplugging the battery port from the motherboard then charging it and booting it, but it still doesn't work. I looked up tutorials and found how I should replace the battery, but I'm not sure that's the issue since it doesn't boot up at all when I charge the phone without the battery plugged in.
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