How to Improve iPhone Battery Life
Make an iPhone last longer between charges and understand battery health.
Make an iPhone last longer between charges and understand battery health. Start with the checks below and confirm the effect of each change before moving on.
Table of contents
Check battery usage
Go to Settings → Battery to see activity by app. Screen brightness, weak signal, navigation and video commonly dominate usage.
Make efficient changes
Enable Auto-Brightness, use Low Power Mode when needed and set location access thoughtfully. Avoid force-closing every app; reopening apps can use more energy.
Understand battery health
Rechargeable batteries wear over time. If maximum capacity is significantly reduced and runtime is poor, a professional battery replacement may help. Review more recommendations in iPhone settings to change.
Separate normal use from a battery problem
Open Settings > Battery and compare the activity chart with the app list. Long periods of screen-on video, games, navigation, camera use or weak cellular coverage can explain a fast drop. Look for an app using substantial background power when you did not actively use it. Update that app, review its Background App Refresh and location access, then compare another full day.
Settings with practical impact
- Use Auto-Brightness and reduce how long the display stays awake.
- Set location to “While Using” for apps that do not need continuous tracking.
- Disable background refresh selectively for apps that do not need fresh data before opening.
- Use Low Power Mode when runtime matters, while remembering that some fetching and visual effects will be reduced.
- Keep iOS current and restart after an update if a process appears stuck.
Force-closing all apps repeatedly is not a general battery fix. Reopening them can require more work, and it may interrupt uploads or navigation.
Check battery health and temperature
Battery Health shows maximum capacity and whether iOS has detected a service issue. Capacity is an estimate, so judge it alongside real runtime and shutdown behavior. Heat also accelerates wear: keep the phone out of direct sun, remove an insulating case if charging makes it unusually hot and stop using damaged chargers. If the screen or case is lifting, stop charging the phone and seek qualified service because the battery may be swollen. Back up the device before any repair.