: Download the .apk from their official site. Enable unknown sources. No sign-in needed (but you can import subscriptions via backup file).

If you prefer a dedicated app, you can manually install the final official version of YouTube that was built for Android 5.1.1.

Install Lightweight Browser AlternativesIf the standard Google Chrome browser runs slowly on your Android 5.1.1 device, the hardware may be running out of RAM. You can install lightweight browsers designed specifically for older devices, such as Mint Browser or Via Browser. These applications consume fewer resources, allowing the YouTube mobile website to stream videos more smoothly without crashing.

Running YouTube on Android 5.1.1 (Lollipop): Complete Guide Android 5.1.1 Lollipop launched in 2015. Today, running the official YouTube app on this version presents significant compatibility challenges. Google has dropped support for older operating systems, meaning the standard Play Store version will no longer log in or play videos.

Even with older versions of the YouTube app, you will experience:

PSA: The official YouTube app is completely broken on Android 5.1.1 in 2026.