Your smartphone is full of surprises. There's an app if you want to use your phone as a magnifying glass or scanner. Tap or click here for hidden apps on your smartphone and how to find them.

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Whether you use an iPhone or an Android, it's easy to share your Wi-Fi so guests don't have to type in the password.

If your Android device is not scanning a QR code, there could be a number of potential issues at play.