"Home Button, Charging Port, Speaker, and Headphone Jack Unresponsive"에 답변There is more internal problem with your device. The phone should work fine without the pentalobe screws.
"Why my Samsung Galaxy Tab S 8.4 keeps on restarting?"에 답변The solder joints of the battery connector on the motherboard is weak. If you see it under a microscope, you will see some cold cracked solder joints. You need to re-solder them and you should be fine after that. I did some galaxy tab with the same problem.