Home button sometimes not working and Screen randomly shuts off

I'm using my dad's Note 10.1 (2014) and I've been experiencing some problems. The screen would randomly just turn off (but it doesn't shut down) when I looked away. I thought it was the smart eye detection feature thingy but when I checked, it was already turned off. Another problem is that the home button and/or the capacitive just randomly stops working. Had to reboot the device in order to get it working again. At first I thought it was some hardware problem but I'm pretty sure it isn't. So yeah. Does anyone face the same problems? I've heard this device have some software issues that causes this but after some searching I got no answers.