How to Enable or Disable Scroll Buttons in UC Browser For Android
У вашего броузера проблема в совместимости с HTML5
This video show How to Enable or Disable Scroll Buttons in UC Browser For Android Samsung Galaxy S5 with Android 5.0 Lollipop Operating System. Model number SM-G900H (International Version). I use Youtube Mobile for Android version 10.37.58 in this tutorial