How can I tell how much battery life I have left on my iPhone 12 plus?
How can I find out how much battery life is left on my 12 plus phone?
iPhone 12 Pro Max, iOS 14
The battery icon on the top right corner gives you an idea of where the charge is at. For a specific percentage, you can drag down from the top right corner to open Control Center. The percentage will be shown next to the battery icon there.
You can also use the Battery widget.
Link-> Use widgets on your iPhone and iPod touch - Apple Support