Apple releases iOS 11.3 so you can check how bad your iPhone battery is

If you've ever had concerns about your iPhone's battery, you're going to want to download the latest iOS update.
Apple just released iOS 11.3, which adds the new "battery health" feature that allows you to check whether your iPhone's battery has degraded. It also lets you see if Apple is throttling your device due to a bad battery. 
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The update is available now in Settings —> General —> Software Update.
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