On iOS 7, CTSubscriber
was added to the CoreTelephony
framework. There is no documentation available, only its header file:
/*
* CTSubscriberTokenRefreshed
*
* Description:
* The name of the NSNotification sent when the carrier token is available.
*/
CORETELEPHONY_EXTERN NSString * const CTSubscriberTokenRefreshed __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);
CORETELEPHONY_CLASS_AVAILABLE(7_0)
@interface CTSubscriber : NSObject
/*
* carrierToken
*
* Description:
* A data blob containing authorization information about the subscriber.
*
* May return nil if no token is available.
*/
@property (nonatomic, readonly, retain) NSData* carrierToken __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_7_0);
@end
Also, on What's new on iOS 7, this is mentioned:
The Core Telephony framework (
CoreTelephony.framework
) lets you get information about the type of radio technology in use by the device. Apps developed in conjunction with a carrier can also authenticate against a particular subscriber for that carrier.
I think that CTSubscriber
is related to the bold part of the text. However, I haven't found anything related on how this happens.
I have tried to use the following code (added to application:didFinishLaunchingWithOptions:
) to experiment with this API, but the notification is never fired and carrierToken
returns nil
:
CTSubscriber *subscriber = [CTSubscriberInfo subscriber];
NSLog(@"%@", subscriber.carrierToken);
[[NSNotificationCenter defaultCenter] addObserverForName:CTSubscriberTokenRefreshed object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *note) {
NSLog(@"==========");
NSLog(@"%@", note);
NSLog(@"%@", subscriber.carrierToken);
}];
So, I have the following questions:
carrierToken
return and how to make it not nil
? CTCarrier
)I asked the same question in the developer forums and got this reply :
You should escalate this via the carrier you're working with, who can in turn escalate it to their contact at Apple.
Link to the thread: https://devforums.apple.com/message/934226#934226
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