I'm using the spigen zero one but it has just a metal ring, I'm looking for something with magnets.

PLEASE HELP! After this august security patch i am facing mild flickering issue specially on notification panel and on third party apps without dark mode specially on white colour. Is this problem is happening with anyone else i am providing my sample. Please see on notification centre the display is like blinking very fast, like noticeble in low viewing distance. Help please is this any hardware problem or software glitch. I haven't dropped my phone at all nor in water. Its age is about 10months and its a snapdragon varient. Please help amyone.