Default Carrier Messaging App
A Boolean value that indicates whether the app can use the TelephonyMessagingKit framework to serve as the default carrier messaging app.
Discussion
Add the Default Carrier Messaging App entitlement to your app by following these steps:
In the Xcode project navigator, select your app’s target, and then the Signing & Capabilities tab.
Add a new capability by clicking the + Capability button and then type “Default Carrier Messaging” in the search field.
Double-click the Default Carrier Messaging App entry to add the entitlement to your app.