Tip 1 : For swift try to understands basics like how optional works.
Tip 2 : For coding read design and architecture patterns.
Tip 3 : Explore Data structure and Algorithm.
Tip 1 : Show your works, links of apps, github link.
Tip 2 : Show your past experiences.
They ask questions related to Swift, Objective C and iOS platform specific.
Difference in MVC and MVVM design pattern.
What are the optionals in Swift. How they works?
How memory management works in iOS. What is strong retain cycle?
Read Swift Doc carefully. Its related to ARC.
Create an app for user management. It can add delete users and show lists of users.
Tip 1 : Use MVVM design pattern
Tip 2 : Write unit test cases.
This is manager round. He just want to look why am I interested for this role?
Why should we hire you?
What are the roll and responsibility you currently works?

Here's your problem of the day
Solving this problem will increase your chance to get selected in this company
Which keyword is used for inheritance?