Why there's a key icon on your Android phone's screen (and how to turn it off)

Android phone's status bars have icons about everything from Wi-Fi status to battery charge. You may also encounter an icon ...
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What Does the Key Icon on My Android Phone Mean?

Anyone with a smartphone may occasionally notice small icons in their notification tray that they don’t recognize. One that puzzles users is the key icon on Android phones. We looked into it for you ...