Yes, the Always-On Display uses battery, but the drain is smaller than you might think

The Always-On Display on newer iPhones (iPhone 14 Pro and later) does consume power, but Apple designed it to be relatively efficient. The feature keeps your lock screen visible at a dimmed brightness level, showing the time, date, and notifications without fully waking the phone. Because the display runs at low brightness and refreshes at a lower rate than the main screen, the battery impact is measurable but not dramatic — most users see a 3 to 5 percent reduction in daily battery life when the feature is active.

The actual drain depends on how often you look at your phone and what content appears on the lock screen. A static time display uses less power than a lock screen showing live widgets or a wallpaper with movement. If you have widgets updating frequently — like weather, stocks, or fitness data — the battery cost rises because the phone must refresh that information even while locked.

Key Takeaways

  • Always-On Display typically reduces battery life by 3 to 5 percent per day, a noticeable but not severe impact.
  • The feature uses less power than unlocking your phone repeatedly to check the time, so the net battery effect depends on your habits.
  • Live widgets and animated wallpapers on the lock screen drain more battery than a static time display.
  • You can turn off Always-On Display in Settings > Display & Brightness > Lock Screen if battery life becomes a priority.

How Always-On Display compares to checking your phone normally

The real question is not whether Always-On Display uses power, but whether it uses more power than the alternative. If you normally check the time by tapping your phone to wake it, the Always-On Display might actually save battery. Waking the full screen, processing that tap, and lighting up the display at full brightness all cost more power than keeping a dimmed lock screen visible continuously.

For people who check their phone dozens of times a day, Always-On Display can reduce the total battery drain because you see the time without triggering a full wake cycle. For people who rarely look at their lock screen, turning it off will extend battery life slightly. The crossover point depends on your individual use pattern.

What drains more battery: widgets or static displays

A lock screen showing only the time and date uses minimal power. A lock screen with live widgets — weather updates, calendar events, fitness rings, or stock prices — uses significantly more because the phone must fetch and refresh that data even while locked. Each widget refresh is a small power draw, and if you have multiple widgets updating every few minutes, the cumulative effect becomes noticeable.

If battery life is your priority, remove widgets from your lock screen and use a static wallpaper without animation or gradients. Keep the Always-On Display itself enabled if you check the time frequently, but limit what information appears on the lock screen. You can customize which widgets show by going to Settings > Lock Screen and tapping the lock screen preview to edit it.

How to measure the actual battery impact on your phone

The only accurate way to know how much Always-On Display affects your specific phone is to test it over two or three days with the feature on, then disable it and test for the same period under similar usage. Check your battery health in Settings > Battery > Battery Health & Charging to confirm your battery is not degraded, which would skew the results.

Watch your battery percentage at the same time each day — for example, at 6 p.m. — and compare the readings. If you consistently see 5 percent more battery remaining with Always-On Display off, that is your actual drain. If the difference is 1 or 2 percent, the feature is not significantly affecting your battery life, and you can leave it on for convenience.

When to turn off Always-On Display to save battery

Turn off Always-On Display if you are traveling without access to a charger and need maximum battery life, or if your battery health has degraded below 80 percent and you want to extend the time between charges. You can disable it temporarily without losing any data: go to Settings > Display & Brightness > Lock Screen and toggle off "Always On".

If you use Low Power Mode regularly, you might also consider disabling Always-On Display during those periods. Low Power Mode already reduces performance and limits background activity, so pairing it with Always-On Display off can give you an extra hour or two of usage time. You can turn the feature back on whenever you want without any penalty.

Why Apple made Always-On Display efficient

Apple uses a technology called ProMotion on iPhone 14 Pro and later, which allows the display to refresh at variable rates — as low as 1 Hz when showing static content like the lock screen. This means the display is not constantly redrawing the same image; it updates only when something changes. The dimmed brightness level also reduces power consumption compared to a full-brightness display.

The OLED screen itself is more efficient at displaying dark content than bright content, so the lock screen — which is mostly black with white text — uses less power than a bright home screen or app. This is why Always-On Display has a smaller battery impact than you might expect from a feature that keeps the screen on all the time.

Frequently Asked Questions

Does Always-On Display drain battery faster than leaving the screen off completely?

Yes, Always-On Display uses more battery than a completely dark screen. However, it uses less battery than repeatedly waking your phone to check the time. The net effect on your daily battery life depends on how often you would otherwise unlock your phone.

Will Always-On Display damage my battery over time?

No. Keeping a display on at low brightness does not degrade the battery itself. Battery health is affected by charge cycles (full drains and recharges) and heat, not by screen usage. Always-On Display will not noticeably shorten your battery's lifespan.

Can I use Always-On Display with Low Power Mode?

Yes, but Low Power Mode may reduce the Always-On Display's refresh rate or brightness further to save more power. You can use both at the same time, and the feature will work normally once you turn off Low Power Mode.

Does turning off widgets on the lock screen save more battery than turning off Always-On Display?

Possibly. Removing live widgets from your lock screen can save more battery than disabling Always-On Display entirely, because widgets require data refreshes. If you want to keep Always-On Display for convenience, removing widgets is a more targeted way to reduce battery drain.

What is the difference between Always-On Display and the regular lock screen?

The regular lock screen turns off when you are not using your phone. Always-On Display keeps a dimmed version of your lock screen visible at all times, showing the time and any static information without requiring you to tap or lift your phone to see it.