Explain me what is polymorphism?
Explain formal protocols?
Explain code signing in ios?
Who calls the dealloc strategy?
What is iphone?
what is the difference between nonatomic & atomic ? which is thread safe and why
Explain how to delete images in ios?
Which framework delivers event to custom object when app is in foreground?
What is managed object context and what are its functions?
What are transient properties?
What are blocks in ios?
Which is easier android or ios development?
What are the different store migration options?