It's time to upgrade Robbie's wife's smartphone, but her MicroSIM won't fit in the new phone's NanoSIM port. We could buy a new SIM and port everything over, but that takes time and effort. Let's instead use a punch tool which costs roughly the same price as buying a new SIM, and convert our card. We'll also learn to correct the white balance of a photo that has no white using the GNU Image Manipulation Program.

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