问题 iOS 9 CloudKit：查询在连接到蜂窝网络时不返回任何内容

我正在使用xcode 7 beta 5开发一个应用程序。当我在iphone 6上运行我的应用程序时，如果我的iphone在wifi模式下工作，我尝试将其连接到CloudKit，所有这些都可以，我显示所有数据;但如果我的iphone在LTE模式下工作，我看不到任何类型的数据。有谁知道如何做到这一点？

    func getRecordsFromCloud() {  

    lavori = []  

    /  

    let _cloudContainer = CKContainer.defaultContainer()  
    let publicDatabase = CKContainer.defaultContainer().publicCloudDatabase  

    /  

    let predicate = NSPredicate(value: true)  
    let query = CKQuery(recordType: "Lavori", predicate: predicate)  

    /  

    let queryOperation = CKQueryOperation(query: query)  

    queryOperation.desiredKeys = ["image","name"]  
    queryOperation.queuePriority = .VeryHigh  
    queryOperation.resultsLimit = 50  

    queryOperation.recordFetchedBlock = { (record:CKRecord) -> Void in  

        let lavoriRecord = record  

        self.lavori.append(lavoriRecord)  



    }  

    queryOperation.queryCompletionBlock = { (cursor:CKQueryCursor?, error:NSError?) -> Void in  

        if (error != nil) {  

            print("Failed to get data from iCloud - \(error!.localizedDescription)")  

        }  
        else {  

            print("Successfully retrieve the data from iCloud")  

            dispatch_async(dispatch_get_main_queue(), {  
                self.tableView.reloadData()  

            })  

        }  

    }  

    /  

    publicDatabase.addOperation(queryOperation)  

}  

谢谢，Alessio