Does your phone die before the end of the day? Before you blame the battery or buy a power bank, try the settings in this guide. Small changes to how your phone uses its screen, network and apps can add hours of battery life — and a few good charging habits can help your battery stay healthy for years. With a few simple changes, you can make your phone battery last longer starting today.
These tips work on both Android and iPhone. Menu names may differ slightly by model, so use the search bar in your Settings app if you can’t find something.
First, Find Out What Is Draining Your Battery
Don’t guess — check. Your phone tracks exactly which apps use the most power.
- Android: Settings → Battery → Battery usage
- iPhone: Settings → Battery
If an app you rarely use is near the top of the list, it’s probably running in the background. Restrict it, update it, or uninstall it.
Screen Settings (The Biggest Battery User)
1. Lower Brightness and Use Auto-Brightness
The display is usually the single biggest drain. Turn on Adaptive brightness (Android) or Auto-Brightness (iPhone, under Accessibility → Display & Text Size) so the screen dims when full brightness isn’t needed.
2. Use Dark Mode
On phones with OLED screens — which includes most mid-range and flagship phones — black pixels are switched off completely. Dark mode can noticeably reduce screen power use, especially at higher brightness.
3. Shorten Screen Timeout
Set your screen to turn off after 30 seconds or 1 minute of inactivity. A screen left on for 5 minutes each time you set down your phone adds up fast.
4. Reduce the Refresh Rate
Many phones have 90Hz or 120Hz displays. They feel smooth but use more power. On Android, look under Settings → Display → Smooth display or Motion smoothness and choose Standard (60Hz) when you need maximum battery life.
5. Turn Off Always-On Display
Always-on display is convenient, but it keeps part of your screen running all day. Turn it off in your Display or Lock screen settings if battery matters more.
Apps and Background Activity
6. Restrict Background Activity
On Android, open an app’s settings (Settings → Apps → [app] → Battery) and choose Restricted or Optimized. On iPhone, go to Settings → General → Background App Refresh and turn it off for apps that don’t need it.
7. Limit Location Access
GPS is power-hungry. Review which apps use your location and change them to Only while using the app — or Never for apps that don’t need it at all.
8. Turn Off Unnecessary Notifications
Each notification lights up your screen and wakes your phone. Turn off notifications for games, shopping apps and anything that isn’t important.
9. Keep Apps and Software Updated
Updates often fix bugs that cause battery drain. Install system updates and keep apps updated through the Play Store or App Store.
Network and Connectivity
10. Use Wi-Fi When You Can
Wi-Fi generally uses less power than mobile data, especially when your cellular signal is weak.
11. Use Airplane Mode in Low-Signal Areas
When signal is poor, your phone works much harder trying to stay connected. In basements, on flights, or in remote areas, switch on Airplane mode (you can still turn Wi-Fi back on separately).
12. Switch Off 5G When You Don’t Need It
If 5G coverage is patchy where you live, your phone may constantly switch between networks. Setting your preferred network to 4G/LTE can save power. On iPhone, 5G Auto handles this automatically.
Use Battery Saver Modes
13. Turn On Battery Saver or Low Power Mode
Battery Saver (Android) and Low Power Mode (iPhone) reduce background activity, visual effects and performance to stretch your remaining charge. You can set Android to turn it on automatically at a certain percentage.
Charging Habits for a Longer Battery Lifespan
14. Avoid Heat and Use Smart Charging
Lithium-ion batteries age faster when they’re hot or kept at 100% for long periods. To protect your battery:
- Don’t leave your phone in a hot car or in direct sunlight.
- Avoid gaming or heavy use while fast charging, as this creates extra heat.
- Turn on Adaptive charging or battery protection (Android) or Optimized Battery Charging (iPhone), which delay charging past 80% until you need it.
- Use a good-quality charger and cable from a trusted brand.
Troubleshooting: Common Problems and Fixes
Battery drains fast right after a system update
After a major update, the phone optimises apps and re-indexes files in the background for a day or two. Give it about 48 hours of normal use before judging battery life.
One app shows unusually high battery use
Open Settings → Battery and check the app’s background use. Force stop it, clear its cache, and update it. If it keeps happening, uninstall and reinstall the app.
Battery drains overnight while the phone is idle
Restart the phone in Safe Mode for a night. If drain drops, a downloaded app is the cause; remove recently installed apps one at a time until it stops. Weak mobile signal also drains the battery as the phone works harder to stay connected.
The phone shuts down at 15 to 20 percent
This is usually a sign of a worn battery. Check battery health if your phone offers it (for example in Samsung Members diagnostics or the battery settings on some Pixel phones) and consider a battery replacement from an authorised service centre.
What Google Says About Battery Life and Battery Care
Google’s Android battery help page separates two goals that are often mixed up: making a charge last longer today, and keeping the battery healthy over the years. For daily battery life it points to the same settings covered in this guide: a shorter screen timeout, lower brightness, dark theme, adaptive battery, and restricting apps that drain the battery in the background.
For long-term health, Google stresses two things. Heat does the most damage: a battery drains faster when it is hot and can be permanently harmed, so keep the phone out of direct sun and remove a thick case if it gets warm while charging. And use the charger that came with the phone or a certified one, because other adapters can charge slowly or damage the battery. When the battery is already low, Battery Saver, Wi-Fi instead of mobile data, and turning off Bluetooth and Location give the biggest savings.
Phone Battery Life: Common Questions
Do battery saver apps work?
Most third-party “battery booster” apps don’t help and can even use extra power themselves. The built-in battery settings are more effective.
Is it bad to charge my phone overnight?
Modern phones stop charging at 100%, and features like adaptive or optimized charging reduce the time spent at full charge. With those turned on, overnight charging is fine.
When should I replace my battery?
If your battery health is below about 80% (check under Battery → Battery Health on iPhone, or your phone’s battery or device care settings on Android), or the phone shuts down unexpectedly, a battery replacement can make an old phone feel new again.
Sources and further reading: Android Help: Get the most life from your battery.
Related guides: 15 Hidden Android Settings You Should Change Right Now and How to Back Up Your Android Phone Completely (Step-by-Step).
Small Changes, Longer Battery
Start by checking which apps drain your battery, then adjust your screen settings — that alone often solves the problem. Add smart charging habits, and your battery will last longer every day and for years to come. Combine several of these tips and your phone battery will last longer for years, not just today.
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