Hello the issue here is that apple decides to stop OS updates on out dated software and even updating ram will not fix this issue. I know its annoying but apple are using it as a way for costumers with older outdated models of there technology to come in store and buy more updated technologies Sorry about this Kind regards Jude Quinn

Hi if after the measure you took didn’t work I would get a big enough plastic box for the computer and fill with rice and place your laptop in the rice and wait 12 hours if that does not work then go to a IT fix place near you.

(1) Press and hold the Note 8 Volume UP and Home keys, then press and hold the Power key at the same time. (2) The Smartphone will vibrate, and the Samsung logo will show on the screen, let go the Power key but hold the Volume Up and Home keys until Android System Recovery screen appears. (3) Wipe cache partition using the Volume Up keys and press the Power key to select it. (4) The Samsung Galaxy Note 8 will automatically restart after the wipe cache partition. (5) If this doesn’t work feel free to email me at Judequinn2109@gmail.com and I will see what other things I could do to fix it