最近，我们开始在应用程序中遇到以下错误。看起来有些网络层故障，但是任何人都可以帮助指导可能的根本原因。这是很少见的。一天发生几次。
kCTEventRegistrationDataStatus(55) (now total 2)
Jul 13 11:50:16 iPhone CommCenter[84] <Notice>: #E Client 3357 (<private>) not permitted to register for event kCTEventIndicatorSignalStrength(16); ignored registration
Jul 13 11:50:16 iPhone CommCenter[84] <Notice>: #I App state[<private>(3357)] is moving from kUnknown to kInForegroundUnknownRestriction
Jul 13 11:50:16 iPhone CommCenter[84] <Notice>: #I App state[<private>(3357)] is moving from kInForegroundUnknownRestriction to kInForegroundRestricted
Jul 13 11:50:16 iPhone CommCenter[84] <Error>: <private> XPC Entitlement Failed: 'public-signal-strength' entitlement required for <private>; dropping.