Merge pull request #259 from Countly/carrierName-fix

Fixed carrier name '--' static value issue on deprecated calls from iOS 16.4 version

Author: ArtursKadikis

CHANGELOG.md

@@ -3,6 +3,7 @@
 - Added a call to enroll users to A/B tests when getting a remote config value: 'getValueAndEnroll'
 - Added a call to enroll users to A/B tests when getting all remote config values: 'getAllValuesAndEnroll'
 
+- Fixed sending '--' as carrier name due to platform changes from iOS version 16.4. This version and above will now not send any carrier information due to platform limitations.
 - Mitigated an issue where users could not enroll to an A/B tests if enrollment request has failed
 
 ## 23.8.2

CountlyDeviceInfo.m

@@ -240,7 +240,15 @@ + (NSString *)carrier
 #if (!TARGET_OS_MACCATALYST)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-    return CountlyDeviceInfo.sharedInstance.networkInfo.subscriberCellularProvider.carrierName;
+    //Note: "carrierName" is deprecated and returns '--' value for apps that are built with the iOS 16.4 SDK or later.
+    if (@available(iOS 16.4, *))
+    {
+        return nil;
+    }
+    else 
+    {
+        return CountlyDeviceInfo.sharedInstance.networkInfo.subscriberCellularProvider.carrierName;
+    }
 #pragma GCC diagnostic pop
 #endif
 #endif