Good evening. I have had my S20 for a few months now. Last week after charging it, the bottom half of the screen went black. when i put the brightness all the way down to its lowest setting i am able to use it fine. When i put the brightness up it turns black at the bottom half only allowing me to see the upper part (maybe 33% of screen). I used my regular fast charger that the phone came with. My phone is a little cracked but no damage under the cracks. With the brightness low i can see the screen clear with no distortion or black screen interference. Ive rebooted the phone in safe mode, no help. I also rebooted the phone back to its new stage and still the same issue. I must say, the POWER SAVING MODE actually takes away the flicker slighty when i enable it and dark mode.