今天整理項目中的打印信息，發現了一堆這樣的打印信息：
[Client] Updating selectors failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated: failed at lookup with error 3 - No such process." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated: failed at lookup with error 3 - No such process.}
[Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated: failed at lookup with error 3 - No such process." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated: failed at lookup with error 3 - No such process.}
模擬器中運行會打印這個，真機不會。可以使用stackoverflow上的改法來屏蔽這個打印：
// 命令行運行下面命令可以屏蔽
xcrun simctl spawn booted log config --mode "level:off" --subsystem com.apple.CoreTelephony
// 如果還要打開，可以將上面的"level:off"進行修改‘off | default | info | debug’