Device Support & Tips: How to Extend Your Phone's Battery Life

Your phone battery is one of those things you usually notice only when it is running low. A warning appears at 20%. Then 10%. Then, just as you need directions, a boarding pass, a work message or a call home, the phone switches off.

The good news is that battery life is not entirely out of your hands. A few practical changes can help your phone last longer between charges, reduce unnecessary wear and make an older device feel more dependable. You do not need to disable every useful feature or turn your phone into a basic handset. The aim is simple: use the power you need, reduce the power you do not, and keep the battery in good condition for as long as possible.

This guide covers everyday battery-saving tips for Android phones and iPhones, along with straightforward device support advice for charging, apps, mobile data, screen settings, heat and battery health.

What affects your phone's battery life?

A phone battery is affected by much more than how often you make calls. The biggest influences are usually:

• Screen brightness and how long the screen stays on
• Video streaming, gaming and other demanding apps
• Poor signal or constant searching for a network
• Mobile data, GPS, Bluetooth and hotspot use
• Notifications and apps working in the background
• High or low temperatures
• Battery age and general battery health
• Software settings and updates
• How often the phone is charged and discharged

Some factors are easy to change. Others, such as battery age or a weak signal in a particular location, may simply need to be managed.

1. Start with the screen

The display is often one of the largest sources of battery use. A bright screen looks clear and attractive, but it also uses more energy. This is especially noticeable when you are watching videos, browsing for long periods or using the phone outdoors with brightness turned up.

Lower brightness when you can

Use automatic or adaptive brightness if it works well for you. It adjusts the screen to suit the surrounding light, rather than leaving it at maximum brightness all day.

You can also lower brightness manually when you are indoors. A small reduction may not feel significant, but it can make a difference over several hours.

• On iPhone, open Control Centre and adjust the brightness slider.
• On Android, swipe down from the top of the screen and adjust the brightness control. The exact menu may vary by manufacturer.

If you regularly use your phone at night, check whether it has an extra-dim or eye-comfort mode. These features are mainly designed for comfort, but they can also reduce the amount of power used by the display.

Shorten screen timeout

If your screen remains lit for several minutes after you put the phone down, that is avoidable battery use. Set the screen to turn off after a shorter period, such as 30 seconds or one minute.

• On iPhone, look under Settings > Display & Brightness > Auto-Lock.
• On Android, look under Settings > Display > Screen timeout or a similar option.

Choose a timeout that is convenient without being unnecessarily long.

Consider dark mode

Dark mode can reduce power use on some phones, particularly those with OLED or AMOLED displays. On these screens, black areas can use less energy because individual pixels are dimmed or switched off.

Dark mode is less likely to make a major difference on an LCD display, but many people find it more comfortable in low light. It is worth trying if you prefer the appearance.

2. Use battery-saving modes intelligently

Modern phones include built-in power-saving tools. These may reduce background activity, limit visual effects, slow automatic updates and restrict some high-power features.

Use them when your battery is running low, when you know you will be away from a charger or when you need the phone to last through a long journey. You do not necessarily need to keep the most restrictive mode switched on permanently.

iPhone Low Power Mode

Low Power Mode reduces some background activity and changes a number of automatic behaviours. You can switch it on from Settings > Battery, or add it to Control Centre for quicker access.

Android Battery Saver

Android phones usually include Battery Saver, Power Saving Mode or a similarly named feature under Settings > Battery. Some manufacturers also offer an ultra power-saving mode for emergencies.

Read the message shown when you enable the feature. Certain functions, such as background syncing or location services, may be limited. That is useful when preserving power matters more than receiving every update immediately.

3. Find the apps using the most power

You do not have to guess which apps are draining your battery. Both iPhone and Android provide battery-use information.

• On iPhone, open Settings > Battery to see battery use by app and activity.
• On Android, open Settings > Battery > Battery usage or a similar menu.

Look for apps that use a large amount of battery even though you rarely open them. A navigation, video, social media or gaming app may be using more power than expected. You can then decide whether to:

• Remove the app if you no longer use it
• Restrict its background activity
• Reduce its notification frequency
• Change its location permission
• Update it if the usage looks abnormal
• Contact the app developer if it continues to behave unexpectedly

Do not routinely force-close every app. On many phones, repeatedly closing and reopening apps can use more power than leaving well-behaved apps suspended. Focus on apps with unusually high usage rather than clearing everything out of habit.

4. Limit background activity

Many apps work when you are not actively using them. They may refresh content, check for messages, upload photos, update location or prepare notifications. This can be useful, but not every app needs to operate in the background.

Review background permissions for apps that do not need to update constantly. Weather, messaging and navigation apps may need more freedom than a shopping app you use once a month.

On iPhone, background activity can be reviewed under Settings > General > Background App Refresh. You can turn it off for selected apps or disable it altogether.

On Android, battery optimisation and background-use controls are usually found under the app's settings or Settings > Battery. Menu names vary between devices.

Be careful with essential apps. Restricting background activity for messaging, security or authentication apps may delay notifications or affect how they work.

5. Manage location services

GPS and location services can use significant power, especially when an app checks your position continuously. Navigation is an obvious example, but social, shopping, fitness and weather apps may also request location access.

Review which apps can access your location and when.

• Use Never, Ask Next Time, While Using the App or Always options where available.
• Keep continuous location access for apps that genuinely need it.
• Turn off precise location for apps that only need an approximate area.
• Stop navigation when you reach your destination.

If you are not using maps, fitness tracking or another location-based service, switching off location temporarily may help conserve power. Do not disable it if you need emergency or safety features that depend on it.

6. Be sensible with mobile data and signal

A phone can use more battery when it has difficulty finding or holding a signal. In a weak-signal area, the device may work harder to communicate with the network. This can happen in buildings, underground locations, rural areas or places with thick walls.

There is no setting that can create a stronger signal where coverage is limited, but you can reduce unnecessary battery use:

• Use Wi-Fi where it is reliable and available.
• Download music, podcasts, maps or videos before travelling.
• Avoid leaving a mobile hotspot switched on after you finish using it.
• Turn off mobile data temporarily if you are in a location with no usable signal and do not need to stay connected.
• Use Airplane Mode during flights or in a long period without coverage, provided you do not need calls or messages.

Wi-Fi is not automatically more efficient in every situation, but a strong Wi-Fi connection can be less demanding than a weak mobile signal. Remember to use a trusted network, especially when handling sensitive information.

7. Reduce unnecessary notifications

Every notification may wake the screen, use sound or vibration and prompt background activity. One alert is not a problem. Dozens throughout the day can add up, while also making the phone feel busier than it needs to be.

Review notifications by app. Keep alerts that matter, such as calls, messages, travel changes and account security warnings. Turn off promotional notifications, repeated social updates and alerts from apps you rarely use.

You can also use notification summaries, scheduled delivery or Do Not Disturb settings where available. This helps reduce interruptions and can extend battery life by preventing the phone from repeatedly lighting up.

8. Control Bluetooth, NFC and connected accessories

Bluetooth is designed to use relatively little power, so leaving it on is not always a serious battery problem. However, actively connected accessories can use more energy on both devices.

When you finish using wireless headphones, speakers, watches or car systems, disconnect them or put them away according to the manufacturer's instructions. Turn off Bluetooth if you will not use it for an extended period.

The same principle applies to NFC, nearby-device scanning and other connectivity features. Do not switch off useful features simply because they exist, but review anything you never use.

Smartwatches and fitness trackers can also affect phone battery life through continuous syncing. Check whether you need every alert and background connection, or whether less frequent syncing would suit you.

9. Keep your phone cool

Heat is one of the biggest enemies of battery health. A phone may become warm while charging, gaming, recording video, using navigation or sitting in direct sunlight. High temperatures can accelerate battery ageing and may cause the phone to slow down or stop charging temporarily.

To reduce heat:

• Keep the phone out of direct sunlight.
• Do not leave it on a car dashboard on a warm day.
• Remove a thick case temporarily if the device becomes unusually hot while charging.
• Avoid demanding games or video recording while the phone is charging if it becomes hot.
• Use a charger and cable that are compatible with the device.
• Do not put a hot phone in a refrigerator or freezer. Sudden temperature changes can cause condensation and damage.

Cold temperatures can also make a battery appear to run down quickly. Normal performance often returns when the phone warms up, but avoid exposing it to extreme conditions whenever possible.

10. Charge safely and look after battery health

Lithium-ion batteries do not need to be completely empty before charging. In fact, regularly running a phone down to zero can be stressful for the battery. It is usually more practical to charge when convenient.

Modern phones manage charging electronically, but good habits still help:

• Use the supplied charger or a reputable, compatible replacement.
• Replace damaged or frayed cables.
• Avoid very cheap chargers with unclear safety information.
• Keep the charging port clean and dry.
• Do not use a damaged battery that is swollen, leaking or causing the phone to separate at the edges.
• If the phone becomes unusually hot or behaves strangely while charging, unplug it and seek professional advice.

Some devices offer optimised charging, adaptive charging or a charging limit. These features may hold the battery at a lower level for part of the night and complete charging closer to when you normally unplug the phone. They are worth enabling if you regularly charge overnight.

There is no need to chase a perfect 0% to 100% cycle. The most important habits are avoiding extreme heat, preventing physical damage and using safe charging equipment.

11. Keep software and apps updated

Software updates can include battery-management improvements, bug fixes and compatibility changes. An app that is using excessive power may have a fault that is resolved in a later version.

Install updates from your phone's official update system and use the official app store for your device. Avoid unofficial battery-boosting apps that promise dramatic improvements. Many simply show information already available in the phone's settings, while some may add more background activity of their own.

After a major software update, battery usage may look higher temporarily while the phone indexes files, updates apps and completes background tasks. Give it some time before deciding that the update has caused a permanent problem.

12. Download content before you travel

Streaming video, music and maps can use a combination of screen power, mobile data and processing power. Downloading content in advance can help your battery last longer, especially on a journey.

Before leaving home, consider downloading:

• Offline maps for your destination
• Playlists, podcasts or audiobooks
• Travel documents and tickets
• Important contact details
• Hotel or booking information

Lowering video quality can also reduce data use and processing demands. If you are listening to audio, keep the screen off and use headphones at a comfortable volume.

For longer journeys, carry a suitable power bank. Check its capacity, output and cable compatibility before you need it. A power bank should be treated like any other battery: keep it away from extreme heat, use a safe cable and replace it if it becomes swollen or damaged.

13. Check whether the battery itself needs replacing

If your phone used to last all day but now drops rapidly even with light use, the battery may simply be reaching the end of its useful life. Settings can help you assess this.

On iPhone, Settings > Battery > Battery Health & Charging shows maximum capacity and whether the battery may need service. Android menus vary, and some manufacturers provide battery-health information directly.

Signs of a worn or faulty battery may include:

• Sudden drops in the percentage reading
• Unexpected shutdowns when the battery still shows charge
• Very short battery life after a full charge
• A phone that becomes hot during ordinary use
• A swollen battery or lifted screen
• Charging that stops, starts or takes much longer than usual

A battery replacement may be more cost-effective than replacing the whole phone. Use the manufacturer or a reputable repair provider, particularly if the device is water-resistant or has a sealed design. Never attempt to puncture, bend or remove a swollen battery yourself.

14. Remember that a SIM plan can affect how you use your phone

Battery life is mainly a device issue, but your mobile plan and habits are connected. A flexible plan can make it easier to use Wi-Fi when appropriate, download content in advance and avoid paying for data you do not need.

With 1pMobile, customers can choose between straightforward Pay As You Go pricing and flexible data Boosts. The service is contract-free, so you can change your approach as your usage changes. If you are travelling in Europe, EU roaming is included across 46 destinations at no extra cost, helping you stay connected without relying on unfamiliar public Wi-Fi networks.

The right plan will not magically make a battery last longer. It can, however, help you make sensible choices about mobile data, hotspots and travel connectivity without unnecessary complexity.

A simple battery-saving routine

If you want an easy starting point, try this five-minute routine once a month:

1. Check battery usage and identify the top three apps.
2. Remove apps you no longer use.
3. Reduce brightness or shorten screen timeout.
4. Turn off notifications that are not useful.
5. Review location access and background activity.
6. Check that hotspot and Bluetooth are not connected unnecessarily.
7. Inspect the charger and cable for damage.
8. Look for battery-health information in Settings.
9. Install pending phone and app updates.
10. Clean the charging port carefully if it contains visible dust. Do not insert metal objects or liquid.

These small checks are more useful than installing a so-called battery booster and hoping for a quick fix.

When to ask for device support

Contact the phone manufacturer, your retailer or a qualified repair provider if your device:

• Swells, smells unusual or becomes dangerously hot
• Shuts down repeatedly
• Will not charge with a known-good charger
• Shows liquid or physical damage
• Loses most of its battery within a short period
• Has a screen that is lifting away from the frame
• Cannot connect reliably despite checking settings and coverage

If your issue is related to mobile service rather than the handset, check that the SIM is inserted correctly, confirm your account or data settings and restart the phone. For eSIM installation, follow the provider's instructions carefully and make sure the phone is connected to Wi-Fi during setup if required.

Final thoughts

Extending battery life is not about turning off everything that makes your phone useful. It is about reducing waste and paying attention to the things that have the greatest effect: screen brightness, demanding apps, weak signal, background activity, heat and battery age.

Start with the changes that suit your routine. Lower the brightness a little. Shorten the screen timeout. Restrict unnecessary notifications. Download content before a journey. Keep the phone cool and use safe charging equipment. Then check battery usage again after a few days.

A few sensible settings can give you more dependable battery life without making your phone difficult to use. No drama. No complicated app required. Just a better-supported device that is ready when you need it.

Related 1pMobile benefits: contract-free SIM-only service, flexible data Boosts, simple Pay As You Go pricing, eSIM and physical SIM options, and EU roaming in 46 destinations. Explore 1pMobile to find a mobile plan that fits how you actually use your phone.