Smartphones get hot when charging because they’re like a cup of soup that’s being heated up. When you plug your phone in, it starts working hard to change the energy from the charger into something it can use. The more work it does, the hotter it gets, just like how a soup gets steamy if you heat it too fast.
Examples
- If you're playing a game while charging, your phone gets even hotter, like adding hot spices to a soup.
- Your phone's back feels warm because the battery is working hard during charging.
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