I update one ui 8.5 beta.... But after updating my phone faces some problem. When someone call me the screen is not open,,, the screen colour shows black but ring sound is start,, after some time the screen will open and then i understand who call me

Hi, anyone can help me? Whether ipad type Pen which is available in online is supported for Samsung Galaxy S9 Ultra Tab?

At first time in every day when i open camera, then camera is not responding. Then after 3rd attempt in every day at morning it is responding but first two time in every day it is not responding.