This was the most requested feature. Android 10 introduced a native, system-wide Dark Mode that applies to the notification shade, settings menu, and supported apps (like YouTube and Telegram). This helped conserve battery life on the Smart 4’s LCD display.
If you cannot update to Android 10, you can still improve your Smart 4's speed by: infinix smart 4 update android 10
: Provides high-level security for low-power processors without sacrificing performance. New Gestures This was the most requested feature