My daughter learned to do all of the basic iPhone interaction --scroll between home screens, launching, and quitting apps-- at around 19 months. Launching apps

My daughter learned to do all of the basic iPhone interaction --scroll between home screens, launching, and quitting apps-- at around 19 months. Launching apps was the most difficult part, as it took her awhile to learn to touch only one part of the screen. It seems to me a brilliant testament to great UX design. While on the subject of judging things by the reactions of small children, the first brand she recognized consistently is Google's - that includes the Google logo, GMail, and a GTUG t-shirt [1] (although she calls them all "Googool"). It's probably because the sound is easy to pronounce, and because of the distinct coloring, but it's still a little freaky, for a year and a half old toddler. 1. http://roman.nurik.net/images/designs/gtug.png http://roman.nurik.net/images/designs/gtug.png