Resume application after call through application: //Call from any button Click -(void)call{ [ self callWithOutExitApplication :[ NSString stringWithFormat : @"+%@" ,@"123456789"]] } -( void )callWithOutExitApplication:( NSString *)pPhoneNumber{ NSURL * callURL = [ NSURL URLWithString :[ NSString stringWithFormat : @"tel://%@" ,pPhoneNumber]]; // Make sure device supports phone functionality. if ([[ UIApplication sharedApplication ] canOpenURL :callURL]){ if (callURL){ NSString *osVersion = [[ UIDevice currentDevice ] s...