If you've got a phone or PDA that plastered with obnoxious logos for some company and you want to get rid of them, it turns out that you can use sugar crystals to sand away the logo without scratching the case beneath. Sugar is abrasive enough to peel away the logo, but soft enough to leave the finish intact.
Now, it's time to get rid of the logo by firmly rubbing it with the sugar. I made a video just to show how strong you can be with it. The main concern is actually not that you scratch the casing but that you scratch off the tape.
This actually takes a long time until you actually see results. It is easiest to use the corners of the sugar cubes. As they provide more control. It is easiest to scratch with one hand and hold the phone steady with the other. (it should just come naturally)