You're given a simple app which is 90% completed, you add the simple missing parts then add additional objectives as time goes on. Simple JSON parsing, displaying information and basic data modelling. If you have time there are some unit tests to fix.
Describe the lifecycle of a UIViewController. Which event is called before a UIViewController is displayed on screen? More mundane questions like this What is Grand Central Dispatch? What is an alternative?
Write a network call to the server in pseudocode
I was expected to know exactly how their company works, even though the website isn't all that clear.
Beacons
Basic Swift and Objective C DS, DB, Clock
Psychometric test
There were a number of questions on loading images in a UITableViewCell and how to download and cache them.
What is core Data and how to perform CURD operation
One phone screen that covered algorithms/data structures, and another that covered iOS. The on-site followed the same, with more emphasis given to the iOS portion. There was also a presentation to give around something I had worked on at my previous job.
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