For Android 5.1.1 (Lollipop), the official YouTube app is essentially non-functional as Google officially ended support for these versions in late 2021 . While you can still download older APKs like version 16.40.36
The story of the became one of preservation. Users began turning to trusted repositories like APKMirror to download the specific installer files needed to keep their older tech functional. How the Story Unfolds for Users Today youtube apk android 511
This creates a paradox for the user: The hardware works perfectly fine for playing 720p video, but the software gatekeepers have moved on. For Android 5
But here is the good news: The last version of YouTube that fully supports Android 5.1.1 (API level 22) is . This version still: How the Story Unfolds for Users Today This
Not every old APK will work. You need a balance between stability, features, and security. After extensive testing on a Samsung Galaxy Note 4 (SM-N910C) running 5.1.1, the most reliable version is: