7 ways to troubleshoot if your Android device is not scanning a QR code

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

I used 14 secret codes to unlock menus of settings on my iPhone and Android - how it works

ZDNET's key takeaways Use these codes to forward calls, pay your bill, check balances, etc.Some of the codes work only on certain carriers or devices.One of the codes also might erase your data, so ...