Is your smartphone running out of charge before evening? You’re not alone. Bright displays, 5G networks, heavy apps and constant notifications drain batteries quickly. The good news is that with a few smart changes, you can increase phone battery life every day and also keep your battery healthy for years.
In this guide, we share 15 proven tips to increase phone battery life on Android phones and iPhones. We also explain how smartphone batteries work, the best charging habits, how to check battery health, and common battery myths you should stop believing.
Table of Contents
How Smartphone Batteries Work
Almost all modern smartphones use lithium-ion or lithium-polymer batteries. These batteries are light, powerful and rechargeable, but they slowly lose capacity over time. Each full charge cycle (using 100% of the battery’s capacity, even across multiple partial charges) causes a tiny amount of wear.
Three things speed up this wear the most:
- Heat: high temperatures damage battery chemistry faster than anything else.
- Staying at 100% for long periods: keeping the battery fully charged for hours adds stress.
- Deep discharges: regularly letting the phone drop to 0% is also harmful.
So, when we talk about how to increase phone battery life, there are two goals: making each charge last longer during the day (battery backup) and keeping the battery healthy over the years (battery lifespan). The tips below help with both.
1. Lower Screen Brightness and Use Auto-Brightness
The display is usually the biggest battery consumer. Keeping brightness at maximum can drain your battery much faster. Small changes like this help increase phone battery life right away.
- Turn on Adaptive Brightness (Android) or Auto-Brightness (iPhone).
- Manually reduce brightness when indoors.
- Reduce the screen timeout to 30 seconds or 1 minute, so the display turns off quickly when not in use.
2. Use Dark Mode on OLED Screens
Most mid-range and premium phones now have OLED or AMOLED displays. On these screens, black pixels are turned off completely, so dark mode can save noticeable power, especially at higher brightness. It is one of the simplest ways to increase phone battery life on OLED phones.
- Android: Settings > Display > Dark theme.
- iPhone: Settings > Display & Brightness > Dark.
Also use dark wallpapers and dark mode inside apps like WhatsApp, YouTube and Instagram.
3. Reduce Screen Refresh Rate When Needed
Many phones now have 90Hz, 120Hz or even 144Hz displays. Higher refresh rates look smooth but use more power. If you need to increase phone battery life on a long day, switch to 60Hz or use the adaptive refresh rate setting. Lowering it is an easy way to increase phone battery life on busy days.
- Android: Settings > Display > Refresh rate (or Motion smoothness).
- iPhone Pro models: ProMotion adjusts automatically, but you can enable “Limit Frame Rate” in Accessibility > Motion.
4. Turn On Battery Saver Mode
Battery saver reduces background activity, visual effects and performance slightly to extend battery backup. Used smartly, it can increase phone battery life by several hours.
- Android: Settings > Battery > Battery Saver (or Power saving mode).
- iPhone: Settings > Battery > Low Power Mode, or add it to Control Center.
You can set battery saver to turn on automatically at 20% or 15%.
5. Find and Control Battery-Draining Apps
Some apps keep running in the background, using location, data and processing power. Check which apps use the most battery: Controlling them is key if you want to increase phone battery life.
- Android: Settings > Battery > Battery usage.
- iPhone: Settings > Battery, then scroll to see usage by app.
If an app uses a lot of battery in the background, restrict it. On Android, set the app’s battery usage to “Restricted” or “Optimised”. On iPhone, turn off Background App Refresh for that app in Settings > General > Background App Refresh.
6. Manage Location Services Smartly
GPS and location tracking can drain battery quickly, especially in maps, food delivery and ride apps. Smarter location settings increase phone battery life without losing features.
- Allow location access only while using the app instead of “Always”.
- Turn off location for apps that don’t really need it.
- On Android, review Settings > Location > App location permissions.
- On iPhone, go to Settings > Privacy & Security > Location Services.
7. Use 4G When 5G Isn’t Needed
5G is fast, but in areas with weak 5G signal, your phone may keep searching and switching networks, which uses more power. If you don’t need 5G speeds, switching to 4G/LTE can help increase phone battery life. This can increase phone battery life noticeably in weak-signal areas.
- Android: Settings > Network & Internet > SIMs > Preferred network type.
- iPhone: Settings > Mobile Service > Mobile Data Options > Voice & Data > choose “5G Auto” or “LTE”.
The “5G Auto” option on iPhone uses 5G only when it will not significantly reduce battery life.
8. Prefer Wi-Fi Over Mobile Data
Wi-Fi generally uses less power than mobile data, especially when the mobile signal is weak. At home or in the office, connect to Wi-Fi whenever possible. Also turn off mobile data when you don’t need it for long periods, such as at night. Choosing Wi-Fi is a quiet but effective way to increase phone battery life.
9. Reduce Notifications and Vibrations
Every notification wakes up the screen and uses some power. Vibration also uses more battery than a simple sound. Fewer interruptions also increase phone battery life a little every day.
- Turn off notifications from apps you don’t need alerts from.
- Disable keyboard vibration and touch vibration.
- Use Do Not Disturb or Focus modes during work or sleep.
10. Remove Live Wallpapers and Heavy Widgets
Animated wallpapers and widgets that update constantly, such as weather, news or stock widgets, keep the processor busy. Use a simple static wallpaper and keep only the widgets you actually use. A simple setup like this helps increase phone battery life over the day.
11. Keep Your Phone and Apps Updated
Phone makers regularly release software updates with battery optimisations and bug fixes. App developers also fix battery-draining bugs. Keep your phone’s operating system and apps up to date. Staying updated is an underrated way to increase phone battery life.
- Android: Settings > System > Software update (the path may vary by brand).
- iPhone: Settings > General > Software Update.
Note: right after a major update, your phone may use more battery for a day or two while it re-indexes files. This is normal.
12. Follow the 20–80 Charging Rule
To increase phone battery life over the long term, try to keep your battery between roughly 20% and 80% most of the time. Lithium-ion batteries experience less stress in this middle range than at 0% or 100%. This habit is the best way to increase phone battery life over the years.
You don’t need to be strict about it. Charging to 100% before a long trip is fine. Just avoid keeping the phone at 100% for many hours every day or letting it hit 0% regularly.
13. Use Built-In Battery Protection Features
Most modern phones have smart charging features that do the hard work for you: These features are designed to increase phone battery life automatically.
- iPhone: Settings > Battery > Charging. Choose Optimised Battery Charging, or on newer models, set a charge limit such as 80%.
- Samsung Galaxy: Settings > Battery > More battery settings > Battery protection, which can limit charging to around 80% or 85% depending on the model.
- Google Pixel: Settings > Battery > Adaptive Charging, which slows charging overnight to finish just before you wake up. Newer Pixels also offer charging optimisation to limit the charge.
- OnePlus, Xiaomi, Realme, Vivo and Oppo: look for “Optimised charging”, “Smart charging” or “Battery health” options in the battery settings.
These features are among the easiest ways to increase phone battery life over the years.
14. Avoid Heat While Charging and Using Your Phone
Heat is the biggest enemy of your battery. Protect your phone from high temperatures: Keeping it cool is essential to increase phone battery life long term.
- Don’t leave your phone in a parked car in direct sunlight.
- Avoid charging under a pillow or blanket.
- Remove thick cases while fast charging if the phone gets very hot.
- Avoid heavy gaming while the phone is charging.
- Keep the phone away from direct sunlight on bike mounts for long periods.
If your phone feels unusually hot, stop using it and let it cool down before charging.
15. Use Original or Certified Chargers
Cheap, low-quality chargers and cables may not regulate voltage properly and can damage your battery over time. Use the charger provided by your phone maker or a certified charger from a reputed brand that supports your phone’s charging standard, such as USB Power Delivery (USB-PD). Good chargers protect the cells and increase phone battery life over time.
Fast charging is safe on modern phones because they manage heat and voltage, but if you are not in a hurry, slower overnight charging with adaptive charging turned on is gentler on the battery.
Quick Settings Summary
| Setting | Where to find it | Benefit |
|---|---|---|
| Auto-brightness | Display settings | Saves screen power |
| Dark mode | Display settings | Saves power on OLED screens |
| Battery saver | Battery settings | Extends daily backup |
| Background app limits | Battery / app settings | Stops hidden drain |
| Location “while using” | Privacy / location settings | Reduces GPS drain |
| 5G Auto / 4G | Network settings | Saves power in weak 5G areas |
| Charge limit / adaptive charging | Battery settings | Longer battery lifespan |
How to Check Battery Health on Your Phone
Knowing your battery’s health helps you decide whether it’s time for a replacement.
On iPhone
Go to Settings > Battery > Battery Health (or Battery Health & Charging). You will see the Maximum Capacity percentage. Apple generally considers a battery worn when it falls below around 80% of its original capacity. Newer iPhones also show the cycle count.
On Android
The option depends on the brand:
- Samsung: use the Samsung Members app and run the battery diagnostic under “Phone diagnostics”.
- Google Pixel: newer Pixels show battery health in Settings > Battery > Battery health.
- Other brands: check the battery settings or the brand’s service or support app. Some brands show battery health only at authorised service centres.
Common Battery Myths You Should Stop Believing
Myth 1: Charging overnight damages the battery
Modern phones stop charging when full and use smart charging features to reduce stress. With adaptive or optimised charging turned on, overnight charging is fine.
Myth 2: You should fully drain the battery before charging
This was true for old nickel-based batteries. Lithium-ion batteries prefer partial charges. Frequent deep discharges actually harm them.
Myth 3: Closing all apps saves battery
Force-closing apps repeatedly can use more battery because the phone has to reload them from scratch. Only close apps that misbehave or drain battery in the background.
Myth 4: Fast charging always damages batteries
Fast charging creates more heat, but modern phones manage it well. It’s safe for daily use, though slower charging is slightly gentler on the battery.
Myth 5: Turning off Bluetooth and Wi-Fi saves a lot of power
Modern Bluetooth and Wi-Fi chips are very efficient. Turning them off may save a little battery, but the screen, mobile network and apps have a much bigger impact.
When Should You Replace Your Phone Battery?
Even if you follow every tip to increase phone battery life, batteries age. Consider replacing the battery when:
- Battery health drops below about 80%.
- The phone shuts down suddenly even when the battery shows 20% or more.
- The battery drains very quickly despite normal usage.
- The phone gets unusually hot during light use.
- You notice swelling, a raised back panel or a gap in the display. Stop using the phone immediately and visit a service centre, because a swollen battery can be dangerous.
Always replace the battery at an authorised service centre to get a genuine part and keep your phone safe.
Extra Tips for Travel and Emergencies
- Carry a good-quality power bank from a reputed brand, with at least 10,000mAh capacity for long trips.
- Download maps and entertainment for offline use before you travel.
- Turn on Airplane mode in areas with no network, because searching for a signal drains the battery quickly.
- In an emergency, use the Ultra battery saver or Extreme battery saver mode available on many Android phones, which limits the phone to essential apps.
For more smartphone guides, see how to block lost mobile phone devices with Sanchar Saathi, and our tips to speed up Windows 11 on your laptop. For official battery guidance, you can also read Apple’s page on maximising battery life.
Battery Tips for Specific Situations
While gaming
Games push the processor and graphics chip hard, which drains battery and generates heat. Lower the in-game graphics quality and frame rate, turn on your phone’s game mode to block notifications, and avoid gaming while charging.
While streaming videos
Download videos on Wi-Fi for offline viewing instead of streaming over mobile data. Choose a lower video quality, such as 480p or 720p, on small screens where the difference is hard to notice.
While using navigation
Maps with GPS and screen-on for long periods use a lot of power. Download offline maps, reduce screen brightness, and keep your phone connected to a car charger on long drives.
On old phones
If your phone is more than three years old, the battery has likely lost some capacity. Uninstall heavy apps, use “Lite” versions of social media apps where available, and consider a battery replacement at an authorised service centre.
Daily Checklist to Increase Phone Battery Life
Use this quick checklist every day to increase phone battery life without thinking about it:
- Keep auto-brightness and dark mode on.
- Close or restrict apps that drain power in the background.
- Switch to 4G or Wi-Fi when you don’t need 5G.
- Charge between 20% and 80% with battery protection turned on.
- Keep your phone cool, especially while charging.
Follow these five habits consistently to increase phone battery life every day, and you’ll also increase phone battery life over the long run by slowing down battery wear.
Frequently Asked Questions
What is the best way to increase phone battery life?
Lower screen brightness, use dark mode on OLED screens, limit background apps and location access, and turn on battery saver when needed.
Is it bad to charge my phone to 100%?
Occasional 100% charging is fine. For long-term battery health, try to stay between 20% and 80% and use built-in charge limit features.
Does dark mode really save battery?
Yes, on OLED and AMOLED screens. Black pixels are turned off, so dark mode can reduce power use, especially at high brightness.
Should I use fast charging every day?
Modern phones handle fast charging safely. If you have time, slower or adaptive charging is slightly gentler on the battery.
How long does a smartphone battery last?
Most smartphone batteries keep good health for around two to three years of normal use, depending on charging habits and heat exposure.
Does 5G drain the battery faster?
It can, especially in areas with weak 5G coverage. Use 5G Auto on iPhone or switch to 4G when you don’t need 5G speeds.
Conclusion
You don’t need expensive gadgets or complicated tricks to increase phone battery life. Small daily habits make a big difference: control brightness, use dark mode, limit background apps and location, choose 4G when 5G isn’t needed, and protect your battery from heat. For the long run, follow the 20–80 charging rule and turn on your phone’s built-in battery protection features. Follow these 15 tips, and your phone will last longer every day and stay healthy for years.
