Since my wife a "Smartphone" uses to play, we know your fingers are probably trocken.Denn with your fingers can be no match operate properly. That's why we bought for this Bedienstifte, so it works properly. The short Bedienstifte can be stuck to the device. Unfortunately, the pins and the rubber caps in intense games limited, therefore this replacement pens. This is also more favorable kunterbunt in 9 pack, here. But my wife likes best to match the machine, PURPLE. Since black and silver is a neutral replacement.