You leave home at 8am with a full battery. By 2pm, you are at 20% and hunting for a socket. Sound familiar?
For millions of phone users, battery anxiety is a real part of daily life. And in a country like Nigeria where power supply can be unpredictable, a phone that dies mid-afternoon is more than a minor inconvenience. It is a productivity problem.
The frustrating part is that most of the battery drain happening on your phone right now is preventable. Background apps, misconfigured settings, bad charging habits, and features you never use are quietly eating through your battery every single hour. A few targeted changes can recover a significant chunk of that lost time.
This guide covers everything: the settings to change today, the charging habits that protect your battery long-term, and the specific steps for both Android and iPhone. Whether you are using a Samsung, Tecno, Infinix, iPhone, or any other phone, something in here applies to you.
First, Understand What Is Actually Draining Your Battery
Before adjusting anything, it helps to know where your battery is actually going. Most people assume their battery is weak when the real problem is one or two badly behaved apps running in the background.
On Android, go to Settings > Battery > Battery Usage. This shows a ranked list of exactly which apps and system processes have used the most power since your last charge. On iPhone, go to Settings > Battery and scroll down to see battery usage by app over the last 24 hours or the last 10 days.
Check this list before you do anything else. If a social media app, a navigation app, or a game is sitting at the top of that list and you barely used it today, that is a background activity problem, and it is fixable.
Your Display Is the Biggest Drain of All
Research from multiple battery testing labs consistently identifies the screen as the single largest drain on smartphone batteries, accounting for close to 45% of total power consumption on most devices.
Three display settings make the biggest difference:
Lower your screen brightness. Keeping brightness at maximum indoors burns through your battery far faster than necessary. Enable Adaptive Brightness, called Auto-Brightness on iPhone, and let your phone adjust the screen to match your environment automatically. On both Android and iPhone, this setting is found under Settings > Display > Brightness.
Reduce your screen timeout. The shorter your screen stays on after you stop touching it, the less battery it wastes. Set this to 30 seconds or 1 minute maximum. On Android, look for this under Settings > Display > Screen Timeout. On iPhone, go to Settings > Display and Brightness > Auto-Lock.
Drop your refresh rate if you have a high-refresh-rate screen. Many modern phones run at 120Hz or even 144Hz, which makes scrolling look buttery smooth but asks the display and processor to work considerably harder. Research cited by Tom’s Guide shows that dropping from 120Hz to 60Hz can cut display power consumption by up to 40% on OLED panels. If you do not play mobile games or do not need the extra smoothness, switch to 60Hz or use adaptive refresh rate. Look for this under Settings > Display > Motion Smoothness or similar, depending on your device.
Turn off Always-On Display if your phone has one. According to DXOMARK testing, an always-on display can drain a battery up to four times faster than when it is disabled. The convenience is rarely worth the cost.
Control Background Apps Aggressively
Every app installed on your phone wants to run in the background, check for updates, refresh its feed, ping its servers, and stay ready for your return. The battery pays the price for all of that activity.
On Android: Go to Settings > Battery > Battery Optimization (or App Battery Usage on Samsung devices). For any app you do not need running constantly, such as shopping apps, news readers, games, or social media apps you check manually, change the setting to Optimized or Restricted. Samsung users can take this further by placing apps in “Sleeping” or “Deep Sleeping” categories, which dramatically limits their background activity.
One important caution: do not restrict messaging apps like WhatsApp, your banking app, or any app where you need real-time alerts. Restricting those means you will miss notifications.
On iPhone: Go to Settings > General > Background App Refresh and turn it off entirely, or go through the list and disable it for specific apps. Background App Refresh allows apps to check for new content while they are not open. Most apps do not need this running constantly, and disabling it for the non-essential ones makes a noticeable difference.
Location services are one of the most consistently overlooked battery drains on every platform. Navigation apps, weather apps, food delivery apps, and dozens of others are often set to track your location all the time, even when you are not using them.
On Android: Go to Settings > Location > App Permissions and review each app. Change anything that does not genuinely need constant location access from “Allow all the time” to “Only while using the app.” For apps that need only approximate location, like a basic weather app, turn off Precise Location entirely.
On iPhone: Go to Settings > Privacy and Security > Location Services and audit each app. Set non-essential apps to “While Using” or “Never.” Also scroll to the bottom, tap System Services, and turn off Networking and Wireless. This stops your iPhone from continuously scanning for networks and Bluetooth devices even when you are not actively connecting to anything. MakeUseOf testing found that disabling this hidden scanning setting produces an immediately noticeable improvement in battery life.
Connectivity Radios Drain Battery Even When Idle
Wi-Fi, Bluetooth, and mobile data scanning drain battery even when your screen is off. The radios in your phone are constantly pinging and scanning for signals in the background.
Turn off Wi-Fi scanning and Bluetooth scanning when you do not need them. On Android, go to Settings > Location > Location Services and turn off both Wi-Fi Scanning and Bluetooth Scanning. These stay active even when Wi-Fi and Bluetooth appear to be switched off in your quick settings panel.
In areas with poor mobile signal, your phone works significantly harder to maintain a connection, burning through battery in the process. If you are somewhere with consistently weak signal and you do not need mobile data at that moment, switching to Airplane Mode temporarily and connecting to Wi-Fi instead can preserve a meaningful amount of charge.
On Android, switching from 5G to 4G in areas with weak 5G coverage also helps considerably. Your phone burns more power searching for a strong 5G signal than simply staying on a stable 4G connection. Go to Settings > Connections > Mobile Networks > Network Mode to make this change.
The Charging Habits That Protect Long-Term Battery Health
Daily usage drains your battery. But how you charge is what determines how long your battery remains healthy over months and years.
Lithium-ion batteries, which power every modern smartphone, degrade faster when repeatedly charged from near zero to 100%. The sweet spot recommended by battery researchers is keeping your charge level between 20% and 80% for everyday use. Charging to 100% occasionally for a long day is fine. Doing it every single night over months accelerates chemical wear.
Most modern phones now have built-in tools to help with this:
iPhone (iOS 17 and later): Go to Settings > Battery > Charging > Optimized Battery Charging. This is on by default and uses machine learning to learn your routine, pausing the charge at 80% and finishing to 100% just before your usual wake time. iPhone 15 and later also offer a static 80% Limit option that simply stops charging at 80% and holds there.
Samsung: Go to Settings > Battery and Device Care > Battery > Protect Battery. When enabled, this caps charging at 85%, reducing voltage stress on the battery over time.
Google Pixel: Adaptive Charging works similarly. It learns your overnight routine and finishes to 100% just before your alarm goes off, rather than sitting at full charge for hours in the middle of the night.
Xiaomi, Tecno, Infinix, and others: Look for “Battery Care,” “Smart Charging,” or “Charging Limit” under battery settings. Most brands have introduced some version of this feature in recent software updates.
One more important point: use the charger that came with your phone, or a certified charger from a reputable brand. Cheap, uncertified chargers can cause overheating during charging, which is one of the fastest ways to permanently damage battery capacity. Apple specifies the ideal operating temperature for its batteries as between 16 and 22 degrees Celsius. Sustained heat above 35 degrees causes permanent capacity loss.
Enable Power Saving Mode Before You Actually Need It
Most people reach for Power Saving Mode when they are already at 15%. Used proactively, it is significantly more effective.
Both Android and iPhone offer battery saver modes that reduce background activity, limit refresh rates, lower screen brightness, and restrict non-essential features. Turning this on when you drop to around 30% extends your remaining charge far more efficiently than waiting until you are nearly empty.
On Android, go to Settings > Battery > Power Saving Mode. You can also set it to activate automatically at a chosen percentage threshold so you do not have to remember.
On iPhone, go to Settings > Battery > Low Power Mode. This can also be added to your Control Centre for one-tap access.
Keep Your Software Updated
This one gets overlooked, but it matters. Operating system updates regularly include battery optimisation improvements and bug fixes for apps that are consuming more power than they should. Running outdated software means you are missing those efficiency gains.
Google’s AutoFDO update, which began rolling out to Android 15, 16, and 17 in early 2025, is a good example. It customises how Android processes code based on real-world usage patterns, improving app launch speeds and reducing the processing load on the chipset. Less processing effort means less heat and less battery drain.
Keep your phone’s operating system and your apps updated. And after a major update, give your phone 24 to 48 hours to settle. The temporary battery drain that sometimes follows a software update is caused by the system reindexing apps and clearing cache in the background. It normalises quickly.
Check Your Battery Health
If your battery drains unusually fast even after applying all of these optimizations, your battery itself may have degraded beyond a normal level.
On iPhone, go to Settings > Battery > Battery Health and Charging. This shows your battery’s maximum capacity relative to when it was new. Apple considers a battery at 80% or below to be significantly degraded and eligible for service. A battery at 100% fresh is fully capable. Anything below 85% starts to noticeably affect how long your phone lasts through the day.
On Android, Google introduced native Battery Health features in Android 16 for Pixel devices, accessible via Settings > Battery. For other Android phones, the app AccuBattery provides detailed cycle count and capacity estimates. Some Samsung, Xiaomi, and other devices also include battery health indicators under their battery settings menus.
If your battery is genuinely worn out, replacing it is significantly cheaper than buying a new phone, and it restores performance immediately.
Quick Wins: Small Habits That Add Up
Beyond the major settings changes, a handful of smaller habits consistently make a real difference:
Reduce your notification volume. Every notification wakes the screen, triggers the processor, and uses battery. Go through your apps and disable notifications for anything that does not genuinely need your immediate attention.
Use dark mode on phones with OLED or AMOLED screens. OLED technology works by lighting individual pixels. Black pixels on an OLED screen consume almost no power at all, making dark mode a genuinely effective battery saver on supported devices.
Close apps you are not using. While modern operating systems are good at managing background memory, apps running actively in the foreground do consume more power. If you are done with an app, close it properly.
Avoid wireless charging for everyday use if battery longevity is your priority. Wireless charging generates more heat than wired charging, and heat is the primary accelerant of long-term battery degradation.
A phone that lasts all day is not about having the biggest battery. It is about managing the battery you have intelligently. Display settings, background app behaviour, location permissions, charging habits, and software updates all work together, and adjusting them takes less than 30 minutes.
Start with what matters most: check your battery usage screen to find the biggest drains, lower your screen brightness, restrict background activity for non-essential apps, and turn on your phone’s built-in charging protection feature. Those four changes alone will make a visible difference by tomorrow.
Is your battery draining unusually fast despite trying these tips? Or do you have a battery trick that works brilliantly that we did not cover? Drop it in the comments below. We would love to hear from the TechCityNG community!
