How to check battery percentage on iPhone 11 and iPhone 12?
Drag down from the top right corner of the home screen to see the battery percentage on your iPhone 11 or iPhone 12. This gesture launches the Control Center, which is where iPhone models with Apple's more modern bezel-free design show battery percentage information. This works on the lock screen, the home screen and even while you're using an app.
How to turn on battery percentage on iPhone 8?
Go to Settings > Battery and turn on Battery Percentage. When you use Low Power Mode on your iPhone 8 or earlier, the battery percentage will always show in the status bar.
How can I see the battery percentage on my Device?
On iPad, iPod touch (7th generation), and iPhone 8 and earlier, you can see the battery percentage in the status bar. Go to Settings > Battery and turn on Battery Percentage.