iPhone Settings to Save Battery: 9 Changes That Matter (2026)

Most iPhone battery advice is a list of 30 toggles, and most of them barely register. A handful do the heavy lifting. This guide puts those first, with the exact menu paths.

If you only have a minute: turn on Adaptive Power (if your iPhone has it), let Low Power Mode switch on automatically, and turn off the Always-On Display if you have one. The rest is about trimming the apps and features that sip power all day.

Menu paths below come from Apple’s support pages and recent iOS 26 coverage. iOS 27 is out too, and menus can move between releases, so if a path doesn’t match your screen, use the search box at the top of Settings.

The quick wins

Turn on Adaptive Power

Adaptive Power is the newest tool in iOS 26. According to PopSci, it learns your habits (Apple says that takes about a week) and eases off when it expects you’ll need the extra hours. The trade-off: brightness may drop by around 3 percent, and some apps may feel slightly slower.

Open Settings > Battery > Power Mode and switch on Adaptive Power. There’s also an optional Adaptive Power Notifications toggle that tells you when it’s active.

iPhone	Adaptive Power
iPhone 17 series, iPhone Air	Supported, on by default
iPhone 16 series	Supported, off by default
iPhone 15 Pro, 15 Pro Max	Supported, off by default
Older models	Not supported (MacRumors says it needs an Apple Intelligence iPhone)

PopSci says it steps aside during demanding tasks such as the Camera app or Game Mode. Below 20 percent, Apple says Low Power Mode turns on automatically when Adaptive Power is on.

Use Low Power Mode properly

Low Power Mode is the strongest option. Apple says it sets Auto-Lock to 30 seconds, lowers brightness, turns off some visual effects, pauses iCloud Photos temporarily, and switches off automatic downloads, email fetch and Background App Refresh.

• iPhone 15 and later: Settings > Battery > Power Mode, then toggle Low Power Mode.
• iPhone 14 and earlier: Settings > Battery, then toggle Low Power Mode.
• Any iPhone: swipe down from the top-right corner and tap the battery icon, or ask Siri.

It turns itself off once the phone reaches 80% or more, per Apple. A yellow battery icon means it’s on.

Automate Low Power Mode

Don’t wait for the 20% prompt. MacRumors suggests a Shortcuts automation: open Shortcuts, create a new Automation, pick Battery Level, set a percentage (say 40%), and add the Low Power Mode action.

Turn off the Always-On Display

If your iPhone has one, switch it off at Settings > Display & Brightness > Always-On Display. MacRumors also notes you can customize it instead, for example by hiding the wallpaper or notifications.

The all-day drains

Limit the frame rate

On iPhones with a 120Hz display, Settings > Accessibility > Motion > Limit Frame Rate drops the screen to 60Hz, according to MacRumors. Scrolling feels less fluid, but it’s a real saving.

Audit location access

Open Settings > Privacy & Security > Location Services and go app by app. MacRumors recommends choosing While Using the App or Never for anything that doesn’t need your position in the background.

Limit Background App Refresh

At Settings > General > Background App Refresh, you can turn it off entirely or limit it to Wi-Fi.

Quiet notifications and keyboard haptics

Every alert wakes the screen. Trim them in Settings > Notifications, and use Settings > Focus to silence apps at set times. Haptic typing feedback is separate: Settings > Sounds & Haptics > Keyboard Feedback, then turn off Haptic.

Consider Dark Mode

MacRumors says Dark Mode saves power on OLED iPhone displays, especially in bright conditions. Treat it as a small bonus.

Find what’s actually draining it

Open Settings > Battery. MacRumors notes the screen shows weekly averages and highlights the apps using the most power in orange. If one app dominates, check its permissions or delete it before you touch anything else.

Several outlets also report extra drain for a day or two after a big update while the phone re-indexes. Give it 24 to 48 hours before judging.

When settings won’t fix it

Check Settings > Battery > Battery Health. Apple says it shows maximum capacity, and that if it reports significant degradation, an Apple Authorized Service Provider can replace the battery. Apple’s battery has a one-year warranty; out-of-warranty service costs money, so check Apple’s current price for your model.

Two habits help long term, per Apple: avoid hot environments such as direct sun, and if you store a phone for a long time, leave it at roughly half charge. On iPhone 15 and later, Settings > Battery > Charging lets you set a limit from 80% to 100%. Optimized Battery Charging lives there too, available when the limit is 100%. On iPhone 14 and earlier it’s under Battery Health & Charging.

Same advice applies to your earbuds: our guide to AirPods not charging in the case covers their battery quirks. And if you’re weighing a new phone partly for battery life, our take on Apple’s $1,999 foldable shows what you’d pay for the newest hardware.

The bottom line

Adaptive Power plus an automated Low Power Mode covers most people. Add location, Background App Refresh and the display tweaks if you want more. If the phone still can’t last a day and Battery Health looks poor, replace the battery rather than hunting for another toggle.