Make sure that the parameter clsReturn (application to start when the call ends) in the call to ITAPI_MakeVoiceCall is 0 (zero). If you specify clsReturn as your app's Class ID, then BREW tries to create another instance of your app, rather than resume your app.
Explain difference between nil and Nil?
What is meaning of "copy" keyword?
What is iPhone screen size?
What is meaning of "assign" keyword?
What is the "interface" and "implementation"?
How to use reusable cell in UITableview?
What are the ViewController lifecycle in iOS?
How can you declare a variable in Swift?
What is property in Objective c?
What manual memory management? How it work?
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