System/Library/PrivateFrameworks/FeatureStore.framework
FSFDeviceInfo.h
@interface FSFDeviceInfo : NSObject
+ (BOOL)isRunningOnInternalBuild;
@end
System/Library/PrivateFrameworks/FeatureStore.framework
@interface FSFDeviceInfo : NSObject
+ (BOOL)isRunningOnInternalBuild;
@end