How to Improve Phone Battery Life: 10 Simple Tips That Actually Work

Your smartphone battery doesn't have to run out before the end of the day. While battery capacity naturally decreases over time, a few simple changes to your phone's settings and daily habits can help you get more battery life from every charge.

Whether you're using an Android phone or an iPhone, these practical tips can help reduce unnecessary battery drain and also protect your battery's long-term health.

1. Reduce Screen Brightness

The display is one of the biggest sources of battery consumption on a smartphone. Keeping your screen at maximum brightness for long periods can drain the battery much faster.

Instead, use automatic or adaptive brightness and keep the brightness as low as comfortably possible. Both Android and iPhone provide built-in recommendations for reducing excessive display brightness to improve battery life.

If your phone has an OLED or AMOLED display, using Dark Mode can also help reduce power consumption in some situations.

2. Set a Shorter Screen Timeout

There's little reason for your phone's display to remain active for several minutes after you've stopped using it.

Set the screen timeout or Auto-Lock to around 30 seconds or one minute. This prevents the display from unnecessarily consuming power when you put the phone down.

On supported Android devices, Google specifically recommends allowing the screen to turn off sooner. Apple also recommends enabling Auto-Lock when the device remains idle.

3. Find Apps That Are Draining Your Battery

If your battery suddenly starts disappearing much faster than usual, an app could be responsible.

Open your phone's Battery settings and check the battery usage section. Look for applications that are consuming unusually high amounts of power, especially when you're not actively using them.

On Android, Adaptive Battery and battery optimisation can help control background activity. On iPhone, the Battery section shows which apps and system activities are using the most power.

If a particular app consistently uses excessive battery, consider updating it, restricting its background activity or uninstalling it if you don't need it.

4. Turn Off Features You Don't Need

GPS, mobile hotspot, Bluetooth and constant location access can increase battery consumption when they're actively being used.

You don't need to disable everything all the time. Instead, turn off features when you genuinely don't need them.

• Turn off Hotspot after you're finished sharing your connection.
• Disable Location access for apps that don't need it.
• Use Wi-Fi instead of mobile data when practical.
• Turn off Bluetooth when you aren't using connected accessories.
• Use Airplane Mode when you know you will be without network coverage for a long period.

Google recommends reducing GPS, tethering, streaming and other high-drain activities when you need to stretch battery life. Apple also recommends using Wi-Fi where possible and notes that poor cellular coverage can increase battery usage.

5. Use Battery Saver or Low Power Mode

When your battery is running low, Battery Saver on Android or Low Power Mode on iPhone can help extend the remaining battery life.

These modes reduce background activity and can limit certain visual effects and background processes.

On many Android phones, you can find Battery Saver under:

On iPhone, go to:

Apple says Low Power Mode reduces or disables certain power-hungry features such as Mail fetch, Background App Refresh and some visual effects.

6. Keep Your Phone Cool

Heat is one of the biggest enemies of battery health.

Your phone can drain its battery much faster when it becomes hot, even when you're not actively using it. Excessive heat can also accelerate long-term battery degradation. 

Avoid leaving your phone:

• Inside a hot car
• Under direct sunlight
• Under a pillow while charging
• In poorly ventilated areas while performing demanding tasks

If your phone becomes unusually hot while charging, gaming or recording video, stop the demanding activity and allow the device to cool down.

7. Don't Regularly Drain the Battery to 0%

One common battery myth is that you should regularly drain your smartphone completely before charging it again.

Modern lithium-ion batteries don't require this.

Google specifically states that you don't need to train your phone's battery by repeatedly going from full to zero or zero to full.

For everyday use, simply charge your phone whenever convenient rather than deliberately waiting until the battery reaches 0%.

8. Use Charging Optimisation

Many modern smartphones include charging-protection features designed to reduce long-term battery wear.

On iPhone, Optimised Battery Charging learns your charging routine and can delay charging beyond 80% when the phone expects to remain connected to a charger for a long period.

On iPhone 15 and later, users can also set a Charge Limit between 80% and 100% in 5% increments. 

Some Android phones offer similar features under names such as Charging Optimisation, Adaptive Charging or Battery Protection.

For example, supported Pixel phones can limit charging to around 80% to prioritise long-term battery health. 

9. Reduce Heavy Gaming and Video Recording

Gaming, camera recording, navigation and high-resolution video streaming can consume a significant amount of battery because they keep multiple components working at the same time.

If you need your battery to last longer during the day, reduce:

• Long gaming sessions
• GPS navigation
• 4K video recording
• High-resolution video streaming
• Mobile hotspot usage

Google identifies navigation, video playback, graphics-heavy games, camera use and tethering as activities that can significantly increase battery consumption.

10. Keep Your Phone and Apps Updated

Battery drain can sometimes be caused by software problems rather than the battery itself.

Make sure your phone's operating system and applications are updated. If an app has a bug causing excessive background activity, a newer version may fix the problem.

Google recommends checking both system and app updates when troubleshooting persistent battery drain. 

It's also worth remembering that battery usage can temporarily increase after a major software update while the phone completes background setup and optimisation tasks. Apple notes that this can happen after an iOS update. 

What About Charging Overnight?

Modern smartphones have built-in charging management systems, so leaving your phone connected to a charger isn't necessarily the battery disaster many people believe it is.

The bigger concerns for long-term battery health are heat and prolonged time at high charge levels.

Features such as Optimised Battery Charging and charging limits are specifically designed to reduce battery wear by limiting the amount of time the phone spends fully charged.

If your phone supports a charge limit or adaptive charging feature, enabling it can be a useful way to protect battery health over the long term.

How to Know If Your Battery Needs Replacement

If your phone is several years old and the battery still drains extremely quickly even after optimising your settings, the battery itself may have lost significant capacity.

On supported iPhones, you can check this under:

Apple notes that rechargeable batteries naturally lose capacity as they chemically age. If an iPhone displays a Service message in Battery Health, replacing the battery may restore battery life and performance. 

Final Verdict

You don't need expensive battery-saving apps or questionable "battery booster" tools to improve smartphone battery life.

The biggest improvements usually come from a few simple habits: reduce unnecessary screen brightness, control background apps, avoid excessive heat, reduce high-drain activities, use Battery Saver when necessary and take advantage of charging optimisation features.

And if your battery has already degraded significantly, software tweaks can only do so much. At that point, checking the phone's battery health and considering a genuine battery replacement may provide a much bigger improvement.