Turn on battery percentage in Settings
To show your battery percentage on the iPhone home screen, open Settings, then tap Battery, then tap Battery Percentage. Toggle the switch to the right so it turns green. That's it — the percentage will appear next to the battery icon in the top right corner of your screen.
The toggle is straightforward: green means on, gray means off. Once you turn it on, you'll see numbers like "87%" or "42%" displayed right in your status bar alongside the battery icon itself. This works on iPhone 12 and newer models.
If you don't see a Battery Percentage option in Settings, your iPhone model may not support this feature. iPhones older than the iPhone 12 don't have this built-in toggle, though you can still check your battery level by swiping down from the top right to open Control Center.
Key Takeaways
- Open Settings, tap Battery, then toggle Battery Percentage on to display the number next to your battery icon.
- The feature works on iPhone 12 and all newer models.
- Older iPhones don't have this toggle, but you can check battery level anytime by opening Control Center.
- Once enabled, the percentage stays visible in your status bar at all times.
Where the battery percentage appears
When you turn on battery percentage, the number displays in the status bar at the top right of your screen, right next to the battery icon. You'll see it whether you're on the home screen, in an app, or anywhere else on your phone. It updates in real time as you use your device.
The percentage disappears only when your battery is critically low — below 1% — at which point your iPhone enters Low Power Mode and the display changes to preserve what little charge remains.
Why you might want to see the percentage
The battery icon alone shows a rough visual estimate — full, three-quarters, half, quarter, empty — but it doesn't tell you exactly how much charge you have left. If you're planning to leave home, attend a long meeting, or travel, seeing "23%" is more useful than seeing a partially filled icon. You can make better decisions about when to charge or whether to enable Low Power Mode.
Some people find the percentage clutters the status bar; others find it essential. You can turn it on or off anytime depending on your preference, and switching between the two takes only a few seconds in Settings.
Checking battery health if percentage seems wrong
If your battery percentage drops very quickly or seems inaccurate, you can check your battery's health in Settings. Go to Settings > Battery > Battery Health & Charging. This shows you the maximum capacity of your battery — for example, "82% Maximum Capacity" means your battery can hold 82% of the charge it could when new.
If maximum capacity is below 80%, your battery is aging normally but may drain faster than it used to. If it's much lower, your battery may need service. This is different from the percentage shown in your status bar, which reflects how much charge is in the battery right now. Battery health is a separate measurement that tells you the overall condition of your battery over time.
Using Low Power Mode alongside battery percentage
Once you can see your percentage, you can decide when to turn on Low Power Mode, which reduces performance and background activity to extend battery life. Many people turn it on around 20% or 30%, depending on how long they'll be away from a charger.
To enable Low Power Mode, open Settings > Battery > Low Power Mode and toggle it on. You can also turn it on from Control Center by swiping down from the top right and tapping the battery icon. When Low Power Mode is active, your status bar turns yellow, making it straightforward to see at a glance that power-saving mode is running.
Troubleshooting if the toggle doesn't appear
If you go to Settings > Battery and don't see a Battery Percentage option, your iPhone is older than the iPhone 12. This feature was added with the iPhone 12 and is not available on iPhone 11, iPhone XS, iPhone X, or earlier models.
On older iPhones, you can still check your battery level by opening Control Center — swipe down from the top right corner of the screen — and looking at the battery icon there. It shows a percentage in Control Center even if it doesn't show one in the status bar. This is a reliable way to see your exact charge level whenever you need it.
Frequently Asked Questions
Does showing battery percentage drain my battery faster?
No. Displaying the percentage in your status bar uses negligible power. It's just a number displayed on your screen and doesn't change how your iPhone manages battery consumption.
Can I show battery percentage on older iPhones?
The built-in toggle is only available on iPhone 12 and newer. On older models, you can view the percentage by opening Control Center, but it won't display in the status bar at all times.
Why does my battery percentage jump from 20% to 5% suddenly?
This usually means your battery health is degraded. Check Settings > Battery > Battery Health & Charging to see the maximum capacity. If it's very low, the battery may not hold charge accurately. Consider having it serviced by Apple.
Does Low Power Mode affect the battery percentage display?
No. Low Power Mode doesn't change how the percentage is displayed — it only changes how your iPhone uses power. The percentage will still show accurately whether Low Power Mode is on or off.
Will the percentage show if my screen is locked?
Yes. The battery percentage appears in the status bar at the top of your screen whether your phone is locked or unlocked. You'll see it anytime you look at your device.