Have you taken a big data and analytic of the Android apps that consumes more data than other apps. From my point of view, YouTube app consumes more data than most Android apps.
How to Save Mobile data on Android while using YouTube App
1. Firstly, launch the YouTube application.
2. Go to settings >> general on the YouTube application.
3. Getting to general settings, toggle on “Limit mobile data usage”.
This would help save your device from high mobile data consumption, but High quality HD videos would be streamed over WiFi. It would just display normal quality of every video played on YouTube.
That’s it on how to save mobile data while playing Youtube videos on android. If you got any question or say, feel free to let me know via comment section.