Youtube | For Android 5.1.1

Features built-in data savings and ad-blocking, which reduces the strain on older processors.

Go to Settings > Storage > Cached Data and clear it to free up limited system memory. Youtube For Android 5.1.1

If your current app is showing an "update required" message that won't go away, here are the most effective ways to get YouTube working again: 1. Use a Mobile Browser (Easiest Method) Features built-in data savings and ad-blocking