As for calendar, I never had any problems with it. Of course it's not standard way that most people get used to, but I think any person will understand what to do.
But I guess there is no easy way to accommodate for both those that do need 1-minute intervals and those who would rather have 5-minute intervals (without adding yet another UI element or yet another setting to toggle).
When you face the choice, to hide a feature instead of removing it altogether can be a good compromise. So it can be still discovered casually, it can spread by the word of mouth, blog posts, and of course the user manual.
When selecting text, would you, for example, put select-word/select-line buttons everywhere a text can be selected or just let people discover what triple click does?
The topic is debatable, I just wanted to say that this kind of choice does make sense to me, and probably many others.
I find sometimes I have difficulty understanding where the bounds of the control actually are. That's not good design, and it seems far from obvious.
I find it's familiarity calendar display coupled with iphone friendly format strikes a good balance.
The time is a clock where you're able to select the hour first and minutes thereafter. This is the most intuitive mobile touch interface I have seen so far, any other is really small, awkward or not mentally easy to comprehend.
Image: https://raw.githubusercontent.com/CiTuX/datetimepicker/maste...
Really? This is incredibly unintuitive in my opinion. That clock was my biggest annoyance with Android and I always selected the wrong time first go round.