My iPhone battery drains very fast after iOS 17 update
I updated to iOS 17 last week and now my iPhone 14 goes from 100% to 20% by lunch. Before the update I could easily get through the whole day. I've tried restarting it but nothing changed. Is anyone else having this problem?
1 Answer(s)
Yes, tons of people are reporting this with iOS 17. It's usually because the update triggered a bunch of background processes — things like reindexing photos, rebuilding caches, and syncing iCloud data. This can last 2-5 days. First, go to Settings > Battery and check which apps are using the most background activity. You'll probably see something unusual. Go to Settings > General > Background App Refresh and turn it off for apps you don't need. Also disable Location Services for apps that don't need it (Settings > Privacy > Location Services). Reset your network settings (Settings > General > Transfer or Reset > Reset > Reset Network Settings) — this fixes a surprising number of battery issues post-update. If that doesn't work, do a full backup and restore via iTunes/Finder. It sounds extreme but it clears out the corrupted cache files. Avoid doing a factory reset unless nothing else works.