This is a huge problem with phone interfaces in general. There's a big push to make them "clean" by removing obvious widgets and basically hoping the user guesses correctly that they need a horizontal half screen swipe to bring up the search bar or tap and hold on an item to bring up options. You're basically just jabbing at the thing until it does what you want. Eventually people figure out various developer's favorite tricks and try them first and it isn't quite so bad, but for new users smartphone interfaces can be quite daunting.

Seriously, watch someone on a new iPhone and it's just painful.

Oh, I created this contact for fun, now how do I delete it. Tap it? Nope. Tap and hold? Nope. Double tap? Nope. Is there a menu somewhere? Nope. Maybe I slide it over? Nope, that brings me back to the previous page. Maybe I pinch? Nope. Guess I'll pull up the help, oh there isn't any. Off to Google then. Oh, I have to slide it over from the middle, not from the edge.