However, Apple did away with it starting with the iPhone X because there wasn't enough room to cram it in for the notch.
To find the battery percentage, you currently have to swipe down in Control Center.
In iOS 16, Apple "fixed" that problem by making the image appear within the battery icon.
If you've updated to the latest beta version and don't see it, it's because it's not enabled by default.
To turn it on, you need to go to the battery menu in settings and flip on the battery percentage toggle.
The option also appears to be unavailable on the iPhone 11, iPhone 12 mini, and iPhone 13 mini.
From a distance, it looks like a number on a sports jersey, and not in a good way. I admit that this is my personal aesthetic taste.
So even if your phone has 10 percent battery left, the icon still shows full.
This is especially true if you already have poor vision. It didn't help that the status bar was always hard to read if you were using a light background.