To get true 2160p (4K) resolution on your phone, you need either specialized third-party applications or high-end web-based downloaders. Method 1: Using Specialized Android Apps
Dedicated downloader apps are the most reliable way to handle the massive file sizes of 4K content. These apps usually require "sideloading" (installing via APK) because Google Play Store policies often restrict YouTube downloaders. how to download 4k video from youtube in android mobile
If you don't want to install an extra app, you can use high-end web tools through Google Chrome or Samsung Internet. 4K Video Downloader – Apps on Google Play To get true 2160p (4K) resolution on your
Open the YouTube app, find your 4K video, tap , and select Copy Link . find your 4K video
Paste the link, and the app will process the ultra-high-definition stream.