Thank you for providing us with repro project. Indeed the events are not triggered. This behavior is already logged in our backlog system. This means it will be reevaluated and fixed in our future releases. Till then users are able to be notified when a cell is visualized using a different mechanism.
Users are allowed to create custom DataSource. In iOS the DataSource is responsible for managing the cells. For example you can override the InitCell() method and get the index of the item being visualized.
You can take a look at the attached project to get a better knowledge.
I hope this information helps. Let us know if you need any further assistance.
Pavel R. Pavlov
Telerik by Progress
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