iPhone Battery Draining Fast After Update — 8 Fixes
📋 Table of Contents
It's common for iPhone battery life to take a hit right after an iOS update. The OS is re-indexing content and re-optimizing in the background. Give it 24-48 hours — but if it's still bad after that, use these fixes.
Fix 1: Wait 24-48 Hours After Update
After a major iOS update, Spotlight re-indexes your entire phone and iCloud syncs changes. This temporarily drains battery faster than usual. Leave the phone plugged in overnight and check battery life the next day.
Fix 2: Check Battery Usage by App
Go to Settings > Battery and look at the app list. If one app is using a disproportionate amount — say 40% — that's your culprit. Delete or restrict its background activity.
Fix 3: Disable Background App Refresh
Go to Settings > General > Background App Refresh and turn it off globally or disable it for specific apps. This stops apps from updating in the background constantly.
Fix 4: Turn Off Location Services for Non-Essential Apps
Go to Settings > Privacy > Location Services and set non-essential apps to 'Never' or 'While Using'. GPS is a major battery drain.
Fix 5: Enable Low Power Mode
Go to Settings > Battery > Low Power Mode. This reduces background activity, mail fetch, and screen brightness, extending battery life by 30-40%.
Fix 6: Recalibrate the Battery
Fully drain the iPhone until it shuts off, then charge to 100% without interruption. This recalibrates the battery percentage display, which can fix inaccurate readouts after an update.
Fix 7: Reset All Settings
Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings. This clears corrupt settings introduced during the update without deleting your data.
Fix 8: Check Battery Health
Go to Settings > Battery > Battery Health. If it reads below 80%, the battery is degraded and needs replacement. Apple charges $89 for an out-of-warranty replacement.
Conclusion
Post-update battery drain is usually temporary. Wait 48 hours, then check app usage stats to identify the culprit. If battery health is below 80%, a battery replacement will give you a phone that feels brand new.