I gave her my phone for about 30 seconds. 10 months old and that is all it took for her to figure out how it works. Entirely repeatable - I give it back to her and she unlocks it immediately and starts toying with her options. These digital natives. The things her little fingers will know. (She also loves that picture of her on the screen saver - yelps with delight when she sees it. Maybe she just loves the idea of a baby sitting there like that).