We tested it on the Galaxy S2, where is works moderately well. the success we got was mainly on the tapping front, ie tapping the icons. But is is borderline impossible to use the same in the note taking application.
On the WePad, no different results were obtained. We tried to draw a line, and all that we got was a dashed line in place of a straight line. Of course, the Windows 8 text recognition failed to do anything with this entry.
We can not conclude its performance on the Galaxy S3. However, we can debunk one rumor: the C-Pen’s back does NOT include the special technology needed for the Galaxy Note!
We will update the review once we receive a Galaxy S3 in our labs. Until then, it is safe to conclude that the stylus works (as unreliable as) any other capacitive stylus – the price of 20 GBP is a bit high for what it offers.