How to Fix Battery Drain (iOS)
Quick Answer
Battery drain on iOS devices occurs when the device consumes power faster than expected, leading to reduced battery life. The fastest initial fix is to identify and close resource-intensive applications running in the background and review Battery Usage settings.
What Causes This Error
- Background App Refresh for numerous applications
- High screen brightness or extended screen-on time
- Frequent location services usage by apps
- Outdated iOS software or app versions
- Poor cellular signal strength, causing the device to search for a network
- Excessive notifications from multiple applications
Step-by-Step Fixes
1Review Battery Usage to Address Battery Drain
- Open the 'Settings' application on your iOS device.
- Scroll down and tap on 'Battery'.
- Wait for the 'Battery Usage by App' section to load. This will display a list of applications and the percentage of battery they have consumed over the last 24 hours or 10 days.
- Identify applications with high battery consumption that you do not frequently use or that are consuming power unexpectedly.
- Consider limiting background activity or uninstalling these applications if their usage is not essential.
2Disable Background App Refresh
- Navigate to the 'Settings' application.
- Tap on 'General', then select 'Background App Refresh'.
- Review the list of applications. Toggle off 'Background App Refresh' for apps that do not require constant updates or that are not critical for immediate notifications.
- Alternatively, you can tap 'Background App Refresh' at the top and select 'Off' to disable it globally for all applications, or 'Wi-Fi' to allow it only when connected to Wi-Fi.
3Adjust Location Services Settings
- Go to 'Settings', then tap 'Privacy & Security'.
- Select 'Location Services'.
- Review the list of applications that have access to your location.
- For each app, tap on it and change its setting to 'While Using the App' or 'Never' if constant location access is not required. Avoid 'Always' unless absolutely necessary for the app's core functionality.
- Consider disabling 'Precise Location' for apps that do not require exact location data.
4Manage Screen Brightness and Auto-Lock
- Open the 'Settings' application.
- Tap on 'Display & Brightness'.
- Adjust the 'Brightness' slider to a lower level that is still comfortable for viewing. Excessive brightness significantly contributes to battery drain.
- Enable 'True Tone' and 'Night Shift' if desired, but prioritize manual brightness adjustment.
- Tap 'Auto-Lock' and select a shorter duration, such as '30 Seconds' or '1 Minute', to ensure your screen turns off quickly when not in use.
5Update iOS and Applications
- Ensure your device is connected to Wi-Fi and has sufficient battery charge or is connected to power.
- For iOS updates: Go to 'Settings' > 'General' > 'Software Update'. If an update is available, tap 'Download and Install'.
- For app updates: Open the 'App Store' application.
- Tap your profile icon in the top right corner.
- Scroll down to see pending updates. Tap 'Update All' or update individual applications. App updates often include performance improvements and bug fixes that can reduce battery consumption.
Advanced Fixes
Reset All Settings
- Navigate to 'Settings' > 'General'.
- Scroll down and tap 'Transfer or Reset iPhone' (or iPad).
- Tap 'Reset', then select 'Reset All Settings'.
- Enter your passcode if prompted. This action resets all settings to their defaults without erasing your data, media, or apps. It can resolve underlying configuration issues contributing to battery drain.
Perform a DFU Mode Restore
- Back up your iOS device to iCloud or your computer. This process will erase all data.
- Connect your iOS device to a computer with iTunes (Windows) or Finder (macOS).
- Put your device into DFU (Device Firmware Update) mode. The steps vary by device model (e.g., for iPhone 8 and later: quickly press and release Volume Up, then Volume Down, then press and hold the Side button until the screen goes black, then press and hold Volume Down while still holding Side button for 5 seconds, then release Side button but continue holding Volume Down until iTunes/Finder detects a device in recovery mode).
- Once detected, follow the prompts in iTunes/Finder to restore your device. This reinstalls the iOS software completely, which can resolve persistent software-related battery issues.
Frequently Asked Questions
Why is my iPhone battery draining so fast suddenly?
Sudden battery drain can be caused by a recent iOS update introducing new features or bugs, a newly installed or updated app running inefficiently in the background, changes in usage patterns (e.g., increased gaming or video streaming), or a degraded battery health.
Does poor cellular signal affect battery life?
Yes, poor cellular signal significantly affects battery life. When your device is in an area with weak signal, it expends more power constantly searching for and trying to maintain a connection to the cellular network, leading to increased battery consumption.
How can I check my iPhone's battery health?
You can check your iPhone's battery health by going to 'Settings' > 'Battery' > 'Battery Health & Charging'. Here, you will see 'Maximum Capacity', which indicates the current battery capacity relative to when it was new. A lower percentage suggests a degraded battery.
Is it better to fully charge my iPhone or charge it in small increments?
Modern lithium-ion batteries benefit from partial charges. It is generally recommended to keep your battery between 20% and 80% to prolong its lifespan. Avoiding frequent full discharges and charges to 100% can help maintain battery health over time.
Does Dark Mode save battery on iOS?
Dark Mode can save battery life on iOS devices that feature an OLED display (e.g., iPhone X and newer, excluding iPhone SE 2nd/3rd gen). OLED screens consume less power when displaying black pixels, as these pixels are turned off. On LCD displays, Dark Mode has minimal to no impact on battery life.