You’re Not Charging Your iPhone Properly
The battery life is the most important aspect of your iPhone, which is why you’ll want to make your iPhone’s battery last as long as possible.
There are many ways to maximize your iPhone’s battery life span, but the easiest one is to charge your iPhone properly. What do we mean by this?
For starters, stop using your iPhone while it’s charging. Also, try to charge your iPhone in a room with a good temperature. If your iPhone gets too hot, either because you’re using it or just because of the weather, it’ll automatically stop charging. Not only that, but if that happens too often, your iPhone’s battery will start to age quicker.
Likewise, you can also use Optimized Battery Charging, so your iPhone’s battery doesn’t age as fast. To do this, you need to go to Settings > Battery > Battery Health & Charging and enable Optimized Battery Charging.