Smartphones use a lot of battery even when you're charging them. It’s like filling up your toy car with fuel, but the car is still running, it uses energy to move around while you fill it up. When your phone charges, it's also doing things in the background, like playing music or updating apps. All that work takes power from the battery even as it's getting charged.
Examples
- You plug in your phone while watching a video, it charges but uses energy for the video.
- Your phone is downloading an app even as you're charging it, the app takes power from the battery.
- While your phone is on charge, it shows a notification that you’re getting messages, that uses battery too.
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See also
- Why Do Smartphones Heat Up When Charging?
- Why Do Smartphones Stay Cool While Charging?
- Why Do Smartphones Feel So Hot When Charging?
- Why Do Smartphones Feel So Warm When You're Using Them?
- How Do Smartphones Know When to Vibrate?