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To turn on Low Power Mode, open Settings > Battery. On iPhone 15 and later, tap Power Mode > Low Power Mode; on iPhone 14 and earlier, tap Low Power Mode directly. A yellow battery icon in the status bar means the mode is on.
Turn on Low Power Mode in Settings
- On iPhone 15 and later: Open Settings > Battery > Power Mode, then tap Low Power Mode.
- On iPhone 14 and earlier: Open Settings > Battery, then tap Low Power Mode.
Apple documents these generation-specific paths in its Low Power Mode support article and iPhone guide to Power Modes.
Turn it on from Control Center or with Siri
You can also use Control Center or ask Siri to turn Low Power Mode on or off. To use Control Center, swipe down from the top-right corner and tap the battery control if it is available. If the control is not there, add the Low Power Mode button to Control Center using the controls available on your iPhone.
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Yellow is the status-bar indicator that Low Power Mode is active. It signals a power setting, not a battery-health warning or, by itself, a hardware problem. When the icon is yellow, Low Power Mode is on.
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What Low Power Mode changes
Low Power Mode reduces power use by limiting selected display, background, and system activity. Apple lists these effects:
- Auto-Lock is set to 30 seconds.
- Display brightness is reduced and some visual effects are turned off.
- iCloud Photos is temporarily paused.
- Automatic downloads, email fetch, and Background App Refresh are turned off.
- On iPhone models with ProMotion, the display is limited to 60 frames per second.
- Some tasks may take longer or run more slowly.
Apple’s support article notes that 5G remains available for streaming and large downloads on iPhone 12 and iPhone 13. Behavior can differ by model, so check Apple’s current documentation for your specific iPhone rather than assuming the same 5G effect applies to every generation.
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When Low Power Mode turns off automatically
Low Power Mode switches off when the iPhone charges to 80% or higher. You can turn it on again manually if you want to continue using it.
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Can iPhone turn it on automatically?
Adaptive Power is a separate feature that can turn on Low Power Mode automatically when the battery reaches 20% on supported configurations. Its availability and default behavior depend on the iPhone model and software version; see Apple’s Power Modes guide for the applicable details.
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How much battery life does it save?
Apple describes the features Low Power Mode limits, but its cited documentation does not promise a specific percentage of savings or a fixed number of extra hours. The result depends on how the iPhone is being used, so there is no universal battery-life figure to rely on.
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