Common Phone Screen Resolutions * HD / 720p (1280 × 720 or 1366 × 768): Found on budget phones; fine for basic use but can look so... Google Pixel - Wikipedia

However, that definition was made for , which were shaped like wide rectangles (16:9 aspect ratio). Your phone is tall and narrow.

On a 6-inch phone screen, the human eye struggle to distinguish between FHD+ and 4K, making the "sweet spot" for battery life and clarity. Are you looking to edit a video to these specific dimensions, or are you trying to fix playback issues on a specific device?