CoreTelephony Namespace

The CoreTelephony namespace provides classes that provide information on the cellular network provider as well as information about the current call.

Classes

CTCall	Encapsulates a unique identifier for a call and it's state.
CTCallCenter	Holds a list of current calls and triggers events when their states change.
CTCarrier	Contains information about the application user's home cellular service provider.
CTCellularData
CTCellularPlanProvisioning
CTCellularPlanProvisioningRequest
CTRadioAccessTechnology	Defines constants describing various telephone radio technogies.
CTSubscriber	Carrier information for a subscriber.
CTSubscriberInfo	Information on a subscriber to a telephone service.
CTTelephonyNetworkInfo	A class that holds information on the application user's cellular service provider.
CTTelephonyNetworkInfo.Notifications

CTCellularDataRestrictedState	Enumerates data restrictions for RestrictedState.
CTCellularPlanProvisioningAddPlanResult
CTErrorDomain	An enumeration whose values specify an error domain.

The APIs in this namespace are used to fetch information

about the cellular network provider as well as information on the

current call.