The fastest ways to cut battery drain right now

Turn on Low Power Mode. Go to Settings > Battery, tap Battery Saver, and choose Low Power Mode. Your iPhone will when ready reduce performance and background activity. This is the single fastest change you can make, and it works on every iPhone model.

Reduce screen brightness or turn on Auto-Brightness. The display uses more power than any other component. Go to Settings > Display & Brightness and either lower the brightness slider or toggle on Auto-Brightness so the screen adjusts to your environment. If you use an iPhone 12 or newer with a ProMotion display, you can also enable Standard refresh rate instead of high refresh rate in the same menu.

Close apps running in the background. Go to Settings > General > Background App Refresh and turn it off entirely, or toggle it off for individual apps you do not need updating when you are not using them. Mail, weather, and social apps drain battery fastest when left to refresh constantly.

Key Takeaways

  • Low Power Mode is the fastest single change and reduces performance slightly in exchange for several extra hours of battery life.
  • Screen brightness accounts for the largest share of battery drain, so lowering it or enabling Auto-Brightness makes a measurable difference.
  • Background app refresh keeps apps updating even when you are not using them; turning it off for apps you check manually saves significant power.
  • Location services, Bluetooth, and Wi-Fi drain battery when enabled constantly, so disable them when you do not need them or use them selectively by app.
  • Older batteries lose capacity over time, and you can check your battery health in Settings > Battery > Battery Health & Charging to see if replacement is worth considering.

Location services, Bluetooth, and Wi-Fi drain

Location services use GPS, which is power-hungry. Go to Settings > Privacy > Location Services and turn it off entirely, or scroll down and set individual apps to "While Using" instead of "Always." This prevents apps from tracking your location in the background.

Bluetooth and Wi-Fi stay active even when you are not connected to a device or network. Go to Settings > Bluetooth and toggle it off when you are not using wireless headphones or speakers. Do the same for Wi-Fi in Settings > Wi-Fi. If you need Wi-Fi but are not actively using it, the battery drain is minimal, so this is a lower priority than screen brightness or background app refresh.

Cellular data uses less power than Wi-Fi or Bluetooth in most cases, so if you are choosing between them, cellular is the more efficient option. However, if your signal is weak, your iPhone works harder to maintain the connection, so being in an area with strong signal matters more than which type of connection you use.

Check your battery health and replace if needed

Your iPhone battery loses capacity over time. After 500 full charge cycles, a typical iPhone battery retains about 80 percent of its original capacity. You can see your battery's current health in Settings > Battery > Battery Health & Charging.

If your battery health is below 80 percent and your iPhone is more than two years old, replacement is worth considering. Apple charges between $69 and $99 for battery replacement depending on your model. Third-party repair shops often charge less, but using an unauthorized repair may void your warranty.

If your battery health is above 80 percent, the battery itself is not the problem. Return to the settings changes above — they will have a larger effect than battery replacement.

Disable visual effects and animations

Animations and visual effects consume processing power. Go to Settings > Accessibility > Display & Text Size and toggle on Reduce Motion. This disables animations when you swipe between screens and open apps, which saves battery by reducing the work your processor does.

You can also go to Settings > General > Reduce Transparency and toggle it on. This removes the blur effect behind menus and notifications, which requires your GPU to work harder.

These changes are less impactful than screen brightness or background app refresh, but they add up when combined with other adjustments.

Turn off notifications and vibration

Notifications wake your screen and trigger vibration, both of which use power. Go to Settings > Notifications and review which apps send you alerts. Turn off notifications for apps you do not need to hear from constantly — social media, news, and games are common culprits.

Vibration uses more power than sound. Go to Settings > Sounds & Haptics and toggle off Vibration for calls and texts if you are willing to rely on sound alone. If you keep vibration on, at least disable it for keyboard clicks in Settings > Sounds & Haptics > Keyboard Feedback.

Manage email and iCloud syncing

Email apps that check for new messages constantly drain battery. Go to Settings > Mail > Accounts, select each account, and change Fetch New Data from "Every 15 Minutes" or "Every 30 Minutes" to "Hourly" or "Manually." This prevents your iPhone from checking for mail in the background as often.

iCloud syncing keeps your photos, documents, and settings synchronized across devices. Go to Settings > [Your Name] > iCloud and turn off syncing for apps you do not need updated constantly — Photos, Mail, and Documents are the heaviest users. You can always sync manually by opening the app and pulling down to refresh.

Avoid extreme temperatures and keep your iPhone cool

Batteries drain faster in cold weather and perform worse in heat. If your iPhone is very cold, warm it to room temperature before using it heavily. If it is very hot, remove it from direct sunlight and let it cool down. Avoid using your iPhone while charging in a hot environment, as this accelerates battery aging.

Certain apps — games, video streaming, and navigation — generate heat because they use your processor and GPU heavily. If you notice your iPhone getting warm, close the app and let it cool for a few minutes. This protects your battery's long-term health.

Frequently Asked Questions

Does closing apps in the app switcher save battery?

No. Closing apps manually does not save battery because apps in the background are suspended, not running. The only exception is if an app has a bug that causes it to use CPU even when suspended. If a specific app drains your battery, go to Settings > Battery and check Battery Usage by App, then turn off Background App Refresh for that app instead of closing it repeatedly.

Should I turn off 5G to save battery?

Yes, if your signal is weak or you are in an area with poor 5G coverage. Go to Settings > Cellular > Cellular Data Options > Voice & Data and select LTE instead of 5G Auto. However, if you have strong 5G signal, the battery difference is small. The trade-off is slower data speeds, so only disable 5G if battery life matters more to you than speed.

Does dark mode actually save battery on my iPhone?

Dark mode saves battery only on iPhones with OLED screens — iPhone 12 and newer. OLED pixels produce their own light, so black pixels use no power. On iPhone 11 and older with LCD screens, dark mode makes no difference because the backlight stays on regardless of what is displayed. Go to Settings > Display & Brightness and select Dark if you have an OLED iPhone.

What is optimized battery charging and should I turn it on?

Optimized Battery Charging slows charging to 80 percent and waits until you need your iPhone to charge the final 20 percent. This reduces the time your battery spends at full charge, which slows aging. Go to Settings > Battery > Battery Health & Charging and toggle it on. The downside is your iPhone may not be fully charged when you wake up, so turn it off if you need full battery in the morning.

Why does my battery drain faster after an iOS update?

iOS updates sometimes cause temporary battery drain because your iPhone is indexing files and processing background tasks. This usually stops after a few days. If it continues, go to Settings > Battery and check Battery Usage by App to see which app is using the most power. If a system app like Mail or iCloud is listed, try restarting your iPhone or turning off Background App Refresh for that service.