The fastest ways to cut battery drain right now
The quickest battery savings come from turning off features you are not actively using. Open Settings, then Battery, and look at which apps have used the most power since your last charge — that list tells you what is actually draining you. From there, the single biggest move is to lower your screen brightness or turn on Auto-Brightness, which adjusts it based on the light around you. A bright screen uses far more power than anything else on your phone.
Next, go to Settings > General > Background App Refresh and turn it off entirely, or turn it off only for apps that do not need to update when you are not looking at them. Mail, Messages, and Maps can stay on if you use them constantly. Games, news apps, and social media can come off. This stops apps from checking for new content and running code while your phone is in your pocket.
If your battery is already low and you need it to last hours, turn on Low Power Mode. Go to Settings > Battery and toggle it on. This cuts performance slightly and disables some features, but it can add four to five hours to your day. You can also set it to turn on automatically at 20 percent battery.
Key Takeaways
- Lowering screen brightness or enabling Auto-Brightness is the single most effective battery-saving step because the display uses more power than any other component.
- Turning off Background App Refresh prevents apps from running code and checking for updates when you are not using them, which drains battery constantly.
- Low Power Mode reduces performance but can extend battery life by four to five hours when you need your phone to last through the day.
- Location Services, Bluetooth, and Wi-Fi drain battery when left on for apps that do not need them, so disabling these for specific apps saves power without losing all connectivity.
- Older iPhones and batteries that have gone through many charge cycles lose capacity over time, and you can check your battery health in Settings > Battery > Battery Health & Charging.
Turn off Location Services for apps that do not need it
Location Services uses GPS, Bluetooth, and Wi-Fi signals to pinpoint your location, and it drains battery faster than almost anything except the screen. You do not need it running all the time. Go to Settings > Privacy & Security > Location Services and you will see a list of every app that has asked for your location. Many of them do not actually need it.
You have three choices for each app: Never, While Using, or Always. Set it to Never for apps like games, shopping apps, and news readers. Keep it on While Using for Maps, Uber, or any app you actively use for navigation. Never choose Always unless the app genuinely needs to know where you are in the background — most do not. This single change can save 10 to 15 percent of your daily battery use.
Disable Bluetooth and Wi-Fi when you are not using them
Bluetooth and Wi-Fi both search for networks and devices to connect to, even when you are not actively using them. If you are at home with Wi-Fi and do not use wireless headphones, turn Bluetooth off. If you are outside and do not need Wi-Fi, turn it off too. Swipe down from the top right of your screen to open Control Center and tap the icons to toggle them.
The exception is if you use them constantly — if you wear AirPods all day or move between Wi-Fi networks at work, leaving them on uses less battery than turning them on and off repeatedly. The key is matching your settings to your actual habits, not leaving them on out of habit.
Reduce motion and visual effects
Your iPhone animates transitions between screens and applies visual effects to icons and notifications. These animations are smooth and nice to look at, but they use processing power and battery. Go to Settings > Accessibility > Display & Text Size and toggle on Reduce Motion. This removes most animations and makes your phone feel snappier too.
You can also go to Settings > Accessibility > Display & Text Size and turn on Reduce Transparency, which removes some of the blurred glass effects behind menus. Neither of these changes is dramatic on its own, but together with other steps they add up.
Check which apps are using the most battery and limit them
Go to Settings > Battery and scroll down to see which apps have used power since your last full charge. The list shows you the real culprits. If an app you barely use is in the top five, you know it is running in the background or has a bug. Delete it or turn off Background App Refresh just for that app.
Some apps, like Maps or Spotify, will naturally use a lot of battery because you are actively using them. That is normal. But if you see an app you opened once using 15 percent of your battery, something is wrong. Try closing it completely, restarting your phone, and checking again. If it happens again, delete the app and reinstall it from the App Store, or contact the app maker to report the issue.
Understand battery health and when to replace your battery
Every iPhone battery degrades over time. After 500 full charge cycles, a battery typically holds about 80 percent of its original capacity. After 1,000 cycles, it may hold 60 percent. You can check your battery's health by going to Settings > Battery > Battery Health & Charging and looking at the Maximum Capacity number.
If your maximum capacity is above 80 percent, your battery is still healthy and the drain you are seeing is likely from settings or apps, not the battery itself. If it is below 80 percent and you are seeing battery drain you did not have before, Apple can replace your battery. The cost varies by iPhone model, but it is usually less than $100. A new battery is almost always cheaper than a new phone and will restore your battery life to normal.
You can also see if your phone is in Low Power Mode or if it has slowed down due to battery age. If you see a message saying your battery needs service, that is Apple telling you the battery is degraded enough that it should be replaced.
Manage notifications and email syncing
Every time your phone receives a notification, it lights up the screen and runs code to display it. If you have dozens of apps sending notifications, that adds up. Go to Settings > Notifications and turn off notifications for apps you do not need to hear from constantly. You can still check them manually when you want to.
Email syncing also drains battery because your phone checks for new messages on a schedule. Go to Settings > Mail and look at Fetch New Data. If it is set to Fetch every 15 minutes, change it to Fetch every 30 minutes or to Manual. For accounts you check constantly, you can leave it on Automatic, but for secondary accounts, Manual saves power.
Frequently Asked Questions
Does turning off Wi-Fi and Bluetooth actually save battery?
Yes, but only if you are not using them. If you use Wi-Fi or Bluetooth constantly, turning them on and off repeatedly uses more battery than leaving them on. The savings come from disabling them when you are in a place where you do not need them — like outside with no headphones.
Will Low Power Mode slow down my phone?
Yes, slightly. It reduces processing speed and disables some features like background app refresh and automatic downloads. For most tasks like texting, email, and web browsing, you will not notice the difference. It is worth the trade-off if you need your battery to last longer.
Is it bad to leave my iPhone plugged in overnight?
Modern iPhones are designed to handle overnight charging safely. Once your battery reaches 100 percent, your phone stops charging and just maintains the charge. However, if you regularly charge to 100 percent and keep it there for hours, it can slightly reduce battery lifespan over years. If you want to maximize battery health, try to keep your charge between 20 and 80 percent most of the time.
Why is my battery draining fast even after I turned off everything?
Check Settings > Battery to see which apps are using the most power. If an app you barely use is draining significant battery, delete it and reinstall it. If the problem continues, your battery may be degraded — check Battery Health in Settings > Battery > Battery Health & Charging. If maximum capacity is below 60 percent, contact Apple about a battery replacement.
Does dark mode really save battery on my iPhone?
Dark mode saves battery only on iPhones with OLED screens (iPhone 12 and newer). On older iPhones with LCD screens, it makes no difference to battery life. If you have a newer model, enabling dark mode can save a small amount of battery, but the effect is much smaller than lowering brightness or turning off Background App Refresh.