The iPhone 15 is one of Apple’s most powerful smartphones yet, featuring the efficient A17 Pro chip, brighter displays, and advanced features. But with so much power packed into your pocket, battery life can sometimes become a concern—especially if you’re a heavy user.
If you’ve been asking yourself, “How can I make my iPhone 15 battery last longer?”—you’re in the right place. This step-by-step guide will show you practical ways to save battery on iPhone 15, including settings to adjust, habits to adopt, and tips to squeeze the most juice out of every charge.
🔋 Why Battery Optimization Matters on iPhone 15
Even with Apple’s improved battery technology, heavy apps, 5G connectivity, gaming, and high-brightness screens can drain power quickly. Learning battery-saving tips not only extends your daily use but also improves the long-term battery health of your iPhone 15.
✅ Essential Tips to Save Battery on iPhone 15
1. Enable Low Power Mode
Low Power Mode reduces background activity, mail fetch, and visual effects.
Steps:
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Open Settings → Battery.
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Toggle Low Power Mode on.
📌 You’ll notice a yellow battery icon when this is active.
2. Reduce Screen Brightness or Enable Auto-Brightness
The iPhone 15’s Super Retina XDR display is stunning, but it’s also power-hungry.
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Swipe down Control Center → Adjust brightness slider.
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Or go to Settings → Accessibility → Display & Text Size → Auto-Brightness.
3. Use Dark Mode
OLED displays consume less power with darker colors.
Steps:
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Go to Settings → Display & Brightness.
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Select Dark Mode.
4. Turn Off Always-On Display (Pro Models)
The iPhone 15 Pro and Pro Max feature Always-On Display, which uses extra battery.
Steps:
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Go to Settings → Display & Brightness → Always-On Display.
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Toggle it off.
5. Manage Location Services
Constant GPS tracking can quickly drain your battery.
Steps:
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Open Settings → Privacy & Security → Location Services.
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Turn it off completely, or adjust app permissions to While Using the App.
6. Limit Background App Refresh
Apps refreshing in the background consume unnecessary power.
Steps:
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Go to Settings → General → Background App Refresh.
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Set it to Wi-Fi only or Off.
7. Update iOS Regularly
Apple often releases battery optimization fixes in updates.
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Go to Settings → General → Software Update and install the latest version.
8. Use Wi-Fi Instead of Cellular
Wi-Fi consumes less power than 5G or LTE.
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Connect to a reliable Wi-Fi network whenever possible.
9. Disable Unnecessary Notifications
Every notification wakes your screen and drains energy.
Steps:
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Go to Settings → Notifications.
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Turn off notifications for apps you don’t need.
10. Turn Off Vibration & Haptics
Haptic feedback uses the Taptic Engine, which requires extra power.
Steps:
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Go to Settings → Sounds & Haptics.
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Turn off Play Haptics in Ring/Silent Mode.
11. Manage Widgets & Live Activities
While convenient, live widgets and activity updates use constant resources.
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Remove unused widgets from your Home Screen.
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Disable Live Activities in Settings → Face ID & Passcode → Allow Live Activities.
12. Disable Unused Connectivity Features
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Turn off Bluetooth, AirDrop, and Personal Hotspot when not in use.
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Use Airplane Mode in low-signal areas to prevent battery drain.
13. Optimize Mail Fetch Settings
Set email accounts to fetch data less frequently.
Steps:
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Go to Settings → Mail → Accounts → Fetch New Data.
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Change to Manual or Every 30 Minutes.
14. Enable Optimized Battery Charging
This feature reduces battery aging by learning your charging habits.
Steps:
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Go to Settings → Battery → Battery Health & Charging.
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Toggle on Optimized Battery Charging.
15. Restart Your iPhone Occasionally
Restarting clears background processes and helps battery efficiency.
📊 Quick Comparison: Battery-Saving Features
| Feature | Battery Savings | Recommended Use |
|---|---|---|
| Low Power Mode | High | Daily use when battery is low |
| Dark Mode | Medium | Always |
| Always-On Display Off | High | Pro models only |
| Background App Refresh Off | Medium | For apps not needed in background |
| Location Services Limited | High | Use only when required |
🧰 Extra Tips for Long-Term Battery Health
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Avoid extreme heat or cold.
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Don’t keep your iPhone charging overnight daily.
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Keep charge levels between 20%–80%.
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Use Apple-certified chargers and cables.
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Store the iPhone at 50% charge if not used for a long time.
🔑 Key Takeaways
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The biggest battery drains are display brightness, 5G, background apps, and Always-On Display.
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Enable Low Power Mode and Dark Mode for instant savings.
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Regularly update iOS to benefit from Apple’s battery optimizations.
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Adjust daily habits—like charging cycles and notification control—for long-term results.
❓ FAQs About Saving Battery on iPhone 15
1. Does fast charging damage iPhone 15’s battery?
No, but frequent 100% charging can reduce battery health over time.
2. Should I close apps to save battery?
Not usually—iOS manages apps efficiently. Constantly closing apps may use more battery.
3. How long does the iPhone 15 battery last on average?
Around 18–20 hours of mixed use, depending on usage.
4. Does turning off 5G save battery?
Yes, LTE uses less power than 5G, especially in weak coverage areas.
5. Will replacing the battery improve performance?
Yes, if your iPhone’s battery health drops below 80%, replacing it restores full performance.
🏁 Conclusion
Learning how to save battery on iPhone 15 is all about combining smart settings with good charging habits. By tweaking display brightness, using Low Power Mode, managing background processes, and adopting long-term battery health practices, you can make your iPhone 15 last much longer between charges.
Your iPhone 15 is built for performance, but with these essential tips and tricks, you’ll have the power to keep it running all day—and preserve your battery health for years to come.