How to Improve Android Phone Battery Life
Quick summary: Simple, safe changes that help your Android phone last longer between charges.
A phone that dies before the evening is frustrating, and the cause is rarely a single big problem. Battery life depends on how much you use the screen, how strong your signal is, what apps do in the background and how old the battery is. You cannot change all of those, but you can change several.
This guide starts with finding out what actually uses your battery, then moves to settings that save power without making the phone hard to use. You do not need a battery saver app, and we explain below why you should be careful with them.
Before you start
Menu names differ between phone brands and Android versions, so use the search box in Settings if you cannot find an option. Changes can take a day or two to show a clear effect, so check again after a day of normal use.
1. Find out what is using the power
Open Settings, then Battery, then Battery usage. Look at the last 24 hours. The screen is usually the biggest user, followed by a few apps. Write down any app that uses a lot of power but that you barely opened. Those are the best candidates to restrict.
Example: If a shopping app shows 8 percent usage and you opened it for two minutes, it is probably working in the background. Restricting it will help.
2. Lower what the screen demands
The display is one of the hungriest parts of a phone. Reduce brightness, or use automatic brightness. Choose a short screen timeout such as 30 seconds. If your phone has a high refresh rate option, a lower setting such as standard saves some power at the cost of slightly less smooth scrolling.
3. Try dark mode on OLED phones
Phones with OLED or AMOLED screens use less power to show dark pixels, so dark theme can save a little battery, especially at high brightness. On an LCD screen it makes little difference, so use it for comfort rather than battery.
4. Turn on Battery Saver when you need it
Battery Saver, also called Power saving mode, limits background activity and some visual effects. Use it on days when you cannot charge. Some phones turn it on automatically at a chosen percentage, which is a handy safety net. Many phones also have an Adaptive Battery option that learns which apps you use less and limits them.
5. Restrict background activity for rarely used apps
Tap an app in Battery usage and look for an option such as Optimized, Restricted or Allow background activity. Choose Restricted for apps you rarely use. Leave alarms, messaging and smartwatch apps on Optimized so they keep working.
6. Switch off features you are not using
Bluetooth, location, NFC and Wi-Fi scanning all use a little power when they are on and idle. Turn them off when you do not need them, or set location access to only while using the app. Do not constantly toggle everything, because that is tiring and the gain is small. Focus on location and Bluetooth.
7. Improve your signal
When the signal is weak, your phone boosts its radio power to stay connected, and that drains the battery quickly. In areas with poor coverage, using Wi-Fi at home or work can save a surprising amount of power. Airplane mode in places with no signal at all stops the phone searching for a network.
Example: A phone left on a basement desk with one bar of signal can lose battery much faster than the same phone upstairs with full signal.
8. Keep the phone cool and charge sensibly
Heat damages batteries over time. Avoid leaving the phone in a hot car, in direct sun or under a pillow while charging. Thick cases can trap heat during fast charging. Some phones offer optimised or limited charging that holds the battery at a lower level overnight, which can slow ageing. Use it if your phone has it.
9. Check the health of the battery
After two or three years, batteries naturally hold less charge. Some phones show battery health in Settings, and some makers have a diagnostics app. If the health is poor, no setting will fix it, and a battery replacement from an authorised service centre may be the real answer.
Pro tip and important warning
Pro tip: If your battery suddenly drains much faster after an update or after installing a new app, check Battery usage the same day. The cause is often one app, and uninstalling it or restricting it solves the problem.
Important: Be careful with apps that claim to boost or clean your battery. Many show ads, collect data or run constantly in the background, which can use more power than they save. Do not use cheap or unbranded replacement batteries, because poor quality batteries can overheat.
Conclusion
Good battery life usually comes from a handful of habits: knowing what drains power, keeping the screen sensible, limiting rarely used apps and avoiding heat. Work through the steps above one at a time and compare your results after a day. If the phone is old, a new battery may be the best fix. For related reading, see How to Find Apps Using Too Much Battery, our Smartphone Settings category, and 10 Android Settings You Should Check Today.
