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Disables Automatic Downloads: Low Power Mode prevents automatic music downloads and automatic app updates from using the battery. You'll need to manually check for new messages (open Mail and pull down from the top to refresh). Turns Off Email Fetching: The iPhone can be set up to periodically check for new emails. Auto-Lock Happens Faster: Regardless of your normal auto-lock settings, your iPhone will auto-lock in 30 seconds when Low Power Mode is on since more screen time uses more battery. Low Power Mode temporarily suspends this feature. It's a cool feature, but it also uses battery. Disables Background App Refresh: The iPhone learns how you use apps and proactively updates them to ensure that the latest data is waiting for you when you're ready. This means the phone will be slower and may not perform as well in games and other graphics-intensive tasks. Low Power Mode reduces the performance of the processor and graphics chip to conserve battery. Reduces Speed: The speed of the iPhone processor influences how much battery it uses. You can also disable Wi-Fi and Bluetooth to save some battery. If you need to save as much battery as possible and don’t mind losing communications and internet features for the time being, enable Airplane Mode. Disable data use for apps that you don’t normally use on the go, or don’t use in the background. Try to limit what apps you have open at any given time, including background apps. In your phone Motion settings, disable Auto-Play Message effects, Auto-Play Video Previews, enable Reduce Motion and enable Limit Frame Rate (13 Pro and Pro Max only). This being said, there are some other things that you can do to conserve battery:
In a lot of ways, Low Power Mode definitely gives you the option of having lower speed features with a battery tradeoff.
Is Low Power Mode the best way to conserve iPhone battery? Updating and downloading iCloud Photos will be paused while Low Power Mode is enabled. This means, after 30 seconds of not being used, the phone will enter standby mode. The Auto-Lock feature is reduced to a default 30 seconds. Animated wallpapers are disabled in Low Power Mode (as in, the backgrounds that move around) along with perspective zoom. The Apple website is vague about what this means, but from what we understand, it’s only a handful of visual effects.