The most notable upgrade in the A51 is the added capability to record 4K video at 30 frames per second using the main camera on the back of the device, while the 2019 model, the

As you can see, 4k video is a substantial step up from 1080p, with four times the resolution of 1080p. On a screen, 4k video contains more than 8 million pixels compared to just 2

It has four times as many pixels as the 720p HDTV video standard, hence the name. So that explains that. QHD is “4K” in the sense that it has four times as many pixels as

As you can see, 4k video is a substantial step up from 1080p, with four times the resolution of 1080p. On a screen, 4k video contains more than 8 million pixels compared to just 2