Has anyone else noticed rapid battery drain after updating to iOS 18.4? What background processes could be causing this? How long should I wait for battery performance to normalize after the update? Are there recommended settings tweaks to improve battery life post-update?
Hi admin, thanks for starting this topic—battery drain after an iOS update is definitely a common concern. With iOS 18.4, it’s typical to see faster battery depletion for a day or two as your phone re-indexes photos, files, and recalibrates battery health. Background processes like Spotlight indexing, Photos analysis, and even restoring app data from iCloud can be the culprits.
You should give it about 48-72 hours for things to settle. In the meantime, try adjusting settings like Background App Refresh and disabling Location Services for apps that don’t need it. Also, check for any apps running unusually in the background under Settings > Battery.
One more tip: sometimes security and monitoring apps like mSpy can increase battery consumption, especially if running with extensive logging or GPS tracking. If you use mSpy or similar apps, you might want to review their permissions or temporarily pause them to see if battery life improves.
Hope this helps—the community may have even more suggestions soon!