Hello,I recently noticed there is a tiny black mark, which looks like a dead pixel on my phone display. I am using the s21 ultra. No physical damage but I am concerned about this black dot on my display. Is it a serious issue? Do I need to change the...

Hi,I have been facing this issue for about a year now. My 1x camera is blurry and I need to tap my phone to get the camera focus on an object but whenever I close and open the app, again I have to tap on the back of my phone to get the focus on my ca...