I got this oppo f1 s as a gift in January from mine brother. Within 5 days of a span, my phone started blinking or flippering(I can’t guess the exact name for this problem). So I called customer care for this problem. They said, "ma’am update your phone it will be alright". I did the same, but no use. It was very hectic for me to handle. I was not able to take any video for it because I didn’t have any alternate phone to make it a proof. When I searched in google. I got a video of it. Many people are suffering from this problem. I would suggest checking before you buy. But the camera is good.(attached video)