My iPhone battery started draining much faster after the latest iOS update. I used to get a full day but now it dies by 3 PM.
Rapid battery drain after an iOS update is very common and usually resolves within 3 to 5 days as the phone re-indexes content in the background. If it does not improve after a week, try these fixes. Go to Settings, Battery, and check which apps are consuming the most power. If a specific app shows unusually high usage, force close it and reopen it (or delete and reinstall). Turn off Background App Refresh for apps you do not need updating constantly: Settings, General, Background App Refresh. Disable location services for apps that do not need it: Settings, Privacy & Security, Location Services. Set each app to While Using instead of Always. Also check if your phone is searching for weak cellular signals — poor cell service drains the battery fast because the radio works harder. Turn on Low Power Mode temporarily: Settings, Battery, Low Power Mode. Other helpful changes include reducing screen brightness, turning off Raise to Wake (Settings, Display, Raise to Wake off), and turning off the always-on display if you have an iPhone 14 Pro or newer. If none of this helps, check your battery health: Settings, Battery, Battery Health & Charging. If Maximum Capacity is below 80 percent, your battery needs replacement.
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