Downloading a YouTube APK—especially older versions like 17.02—carries inherent risks.
Official YouTube stops playing when you leave the app or turn off your screen (unless you pay for YouTube Premium). The 20702 APK removes this restriction.
Verdict: Works perfectly. You can play music or podcasts with your screen off.
An APK is essentially a compressed ZIP file with a specific structure. When a user downloads a YouTube APK, they are downloading the entire application ready for execution. This package contains:
Do not use random "YouTube APK Downloader" websites. Use only these two:
Search query for APKMirror: "YouTube 20.70.2 APKMirror"