Hello friends. If you remember, I was one of the people who bought the first S21 Ultra series 2 months ago, and unfortunately I had a problem with severe overheating in the camera and battery performance. I wanted to say that I bought an S21 Ultra again and I want to Let me tell you my experiences. The first thing I have to say is that when I took the device out of the box, I saw that the December 2020 update was installed on it, just like my previous S21 Ultra. Until I installed the 1.5 GB update and the device was updated in April. Then I hard reset and wiped cached it to completely remove the effects of the previous update. After doing the hard reset, I turned on the device and I started using it. And I want to say you that the performance of the S21 Ultra has really improved after these updates. The camera is completely smooth and there are no more occasional lags moving between the cameras. The image quality has increased drastically. And most importantly, the problem of overheating has been solved. To perform this test, I recorded 4k 60fps video for 41 minutes. When it started I recorded the video and the device started to warm up in 5 minutes, but the important point is that the process of warming up the device stops after 5 minutes and does not get hotter. It has a completely normal heat for 41 minutes video. I was very surprised, because in my previous S21, with the January update, 20 minutes of full HD video recording was very hot, and it burns my hand, while now I have recorded 41 minutes of video without overheating. In terms of battery, it has been extremely excellent. In the past, using a camera, the battery was draining very quickly. However, now, with 41 minutes of video, only 18% of the battery has been reduced.
The whole device is great. I wish Samsung had given this update in January