Any bindings canceled on the iPhone relate to the situation where the user touched the item and then was interrupted by an unexpected (on your part) notification, such as a text message, a low battery warning, or a phone call. In this situation, they touched the element, but were interrupted in the middle. You must deal with this, understanding where you have ever touched the screen on the screen for the last time, there may not have been a place where he intended to stop touching (touching).
Touches Ended means that the user intentionally stopped touching the item.