The easiest ways to make your iPhone battery last longer are to lower screen brightness, turn on Low Power Mode when you need it, limit background app activity, keep the phone out of heat, and use the built-in charging limits that slow battery wear. None of these need special apps or technical knowledge, and together they can add hours to a normal day.
Every lithium-ion battery slowly loses capacity as it ages, so no phone keeps its day-one battery life forever. The good news is that your habits have a big effect on how quickly that happens. Here are seven simple changes worth making.
1. Turn Down the Screen Brightness
The display is usually the biggest drain on any phone. Leave Auto-Brightness switched on (Settings, then Accessibility, then Display and Text Size) so the screen dims in darker rooms, and pull the brightness slider down a little in Control Centre when you do not need full brightness. Dark Mode can also help on iPhones with OLED screens, because black pixels use less power.
2. Use Low Power Mode at the Right Moments
Low Power Mode cuts background activity such as mail fetching, some visual effects and automatic downloads. You can switch it on from Control Centre or in Settings under Battery. It is ideal for long travel days, festivals or any time you are away from a charger. You can even set up a Shortcuts automation to turn it on automatically when the battery drops below a level you choose.
3. Check Which Apps Use the Most Battery
Go to Settings, then Battery, to see a list of the apps that have used the most power over the last 24 hours and 10 days. If an app you rarely open sits near the top, it is probably running in the background. Turn off Background App Refresh for it, or delete it if you do not need it.
4. Limit Location Services
Apps that track your location all the time can drain the battery quietly. In Settings, under Privacy and Security, then Location Services, change apps from “Always” to “While Using the App” unless they genuinely need constant access, such as a navigation app during a trip.
5. Keep Your iPhone Out of the Heat
Heat is the battery’s worst enemy. Apple recommends using iPhone in temperatures between 0 and 35 degrees Celsius. Avoid leaving it on a car dashboard, in direct sun on a beach towel, or charging under a pillow. If your phone gets hot while charging, take it out of a thick case.
6. Use the Charging Limits Built Into iOS
Recent iPhones include Optimised Battery Charging, which learns your routine and waits to finish charging past 80% until shortly before you usually unplug. Newer models also let you set a fixed charging limit, such as 80% or 90%, in the Charging settings. Keeping the battery away from 100% for long periods helps it age more slowly.
7. Keep iOS up to Date
Software updates often include battery and performance improvements, as well as important security fixes. Turn on automatic updates in Settings, then General, then Software Update, so you do not have to remember.
Small Habits That Make a Big Difference
Beyond settings, a few everyday habits help your battery throughout the day. Try not to let the phone run all the way down to 0% regularly, and avoid leaving it at 100% on a hot charger for hours. Charging little and often is perfectly fine for modern lithium-ion batteries. If you use your phone for navigation in the car, mount it away from direct sunlight and air vents that blow hot air.
Notifications also use power, because each one wakes the screen and may switch on the radio. Go through Settings, then Notifications, and turn off alerts from apps that do not need your attention. As a bonus, you will probably feel less distracted too.
Widgets and live activities that update constantly, such as sports scores or delivery trackers, can also add up. Keep the ones you really use and remove the rest from your Home Screen and Lock Screen.
What to Do on a Long Day Away From a Charger
- Switch on Low Power Mode early, not when you reach 10%.
- Download maps, music and videos on Wi-Fi before you leave.
- Turn on Airplane Mode in areas with weak signal, where the phone works harder to stay connected.
- Carry a small power bank and a short cable for emergencies.
When is it Time for a New Battery or a New Phone?
Check Settings, then Battery, then Battery Health. Apple considers a battery worn when its maximum capacity falls below about 80% of the original. At that point you can choose between a battery replacement and an upgrade. If your phone is several years old and also feels slow, an upgrade may be the better value. Retailers such as AppleBitcoin’s iPhone range list current models with their specs side by side, which makes it easier to compare battery sizes and features before you decide.
Frequently Asked Questions
Is it bad to charge my iPhone overnight?
Not really. Optimised Battery Charging and charging limits are designed to reduce wear when the phone stays plugged in for long periods.
Does closing apps save battery?
Usually not. iOS manages apps in the background efficiently, and reopening an app from scratch can use more power than switching back to it.
Do wireless chargers damage the battery?
Certified wireless chargers are safe, but they can make the phone warmer than a cable. Remove a thick case if it gets hot.
Why does my iPhone battery drain faster after an update?
After a major update, your iPhone re-indexes photos, files and apps in the background for a day or two. Battery life usually returns to normal once that work finishes, so give it a little time before worrying.
Final Thoughts
A few small changes, such as lower brightness, smarter location settings, charging limits and keeping your phone cool, can make your battery last longer each day and age more slowly over the years.