You can say "Hey, Siri" and ask a question without having to touch your iPhone. But that means the device is always listening, and draining battery. How to turn off:
- Go to Settings > Siri & Search
- Disable "Listen for 'Hey Siri.'"
Turn off “Hey Siri” to save battery
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Disable automatic downloads and app updates
Downloading apps and updating them in the background uses a lot of power.
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