Difference b/w collectionView & uitableview?
DB updation when app new version comes ?
How to do upload of large sized video file to server ? while uploading user presses “Homebutton” How long will execute?
Difference between iOS 3 , iOS4, iOS 5, iOS 6, iOS 7 and iOS 8 (What are the new features)
Explain application states
Explain @synchronized ,@dynamic
what is the difference between nonatomic & atomic ? which is thread safe and why
Explain Apple push notification
In mapKit frame work, how to get current user location
Explain which all events will perform an ios application in background
Explain about AFNetworking. What is the base class used in AFNetworking library
What is the methods for unzip file in AFNetworking
How to convert MVC design pattern to MVVM design patterns
Mention what is the difference between Swift and ‘Objective-C’ language?
what is the procedure of using D2MS server in cloud messaging in android