Hello ! This issue can be hardware or software based, there are solutions too, try these out. Make sure your device is updated to the latest software. Go to your Phone Dailer >> type " *#0*# ". Once you type that numbers you will see an interface with lots of options in big size buttons. On the first row you'll see options like Red/Blue/Green.
Tap on each color if you see any two colors(RB/GR/RG)are working properly but , not the other one(Screen my go black)then this can be software issues and this can be easily solved by updating( try to Update/downgrade/wait for new update)
If you still see the color defects( Flickering or color disruption) while going through this process and even after the process then it's a hardware issue. You may pay a visit to your nearest service center
it is looking fine now...but while I'm playing pubg the brightness level automatically goes down...i have to press home button..again I have to enters into the game and it will be fine for 35 secs and again brightness level goes down
THIS MOBILE SIGNAL RECEPTION IS VERY WEEK. CONFIRMLY I WILL BET SAMSUNG TECHNICAL PEOPLE ALSO WITH 100000/_ REGARDING SIGNAL RECEPTION IS WEAKER THAN OTHER MOBILES LIKE XIAOMI, REALME LIKE CHINESE MOBILES. DONT PURCHASE THIS MOBILES . THEY ARE PROVIDING THEIR ' EXYNOS ' WORST PERFORMING PROCESSORS. THIS IS REAL WHAT I AM TELLING . BELOW I HAVE GIVEN SIMPLE EXAMPLE FOR YOU.
FOR SAMSUNG S20 MOBILE , THEY ARE PROVIDING THEIR WORST 'EXYNOS' PROCESSORS IN INDIA , FOR THE SAME MOBILE IN AMERICA THEY ARE PROVIDING BEST SNAPDRAGON 865 PROCEESOR . EVEN THEIR KOREAN PEOPLE ALSO HATED THE SAMSUNG 'EXYNOS' PROCESSOR PERFORMANCE IN ' SAMSUNG S20 ' MOBILE.
AND THEIR SERVICE ALSO VERY WORST. TODAY I VISITED THEIR SERVICE CENTRE TO RECTIFY THE CHARGING PORT PROBLEM , HE TOLD THAT IT WILL TAKE ONE WEEK TO 10 DAYS TO RECTIFY THE PROBLEM . THIS IS A SMALL PROBLEM . I TOLD HIM TAKE THE COMPLAINT , AND GIVE MY MOBILE BACK , AFTER ONE WEEK I WILL COME AND I WILL GIVE THE MOBILE AND RECTIFY THE MOBILE WITH NEW PART . HE REFUSED FOR THE SAME . REGARDING THIS ALSO I CALLED THEIR CUSTOMER CARE , THEY ARE NOT ABLE TO TELL WHERE THE PART AVAILABLE TO THE NEAREST SERVICE CENTRE IN GUNTUR DISTRICT.
OTHER COMPANIES ARE DOING SMALL PROBLEMS WITH IN ONE DAY. BUT SAMSUNG IS TAKING 10 DAYS . THIS MUCH OF WORST THEY ARE DOING SERVICE.
THEY ARE RELEASING NUMBER OF MODELS WITH SAME PROCESSOR 'EXYNOS 9611' BUT NOT MAINTAINING PROPER SPARE PARTS AT THEIR SERVICE CENTERS . THEIR SERVICE CENTER PEOPLE ARE BEHAVING LIKE GAZITTED OFFICERS. FIRST OF ALL THIS IS THE MAIN PROBLEM WITH SAMSUNG.