admob - Xcode 10 seems to break com.apple.commcenter.coretelephony.xpc

Question

I have upgraded to Xcode 10 on High Sierra and now the Rewarded Ad example project from AdMob complains that com.apple.commcenter.coretelephony.xpc is not working correctly.

Is there a new entitlement that I have to enable? I am searching for hours without any clue.

UPDATE: This only happens from the simulator. On the device it works fine. They must have added a new restriction.

2018-09-22 10:59:39.730813+0100 RewardedVideoExample[1449:26168] libMobileGestalt MobileGestalt.c:890: MGIsDeviceOneOfType is not supported on this platform.
2018-09-22 10:59:40.031746+0100 RewardedVideoExample[1449:26281] Failed to create remote object proxy: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.031865+0100 RewardedVideoExample[1449:26261] Failed to ping server after delegate was set
2018-09-22 10:59:40.031938+0100 RewardedVideoExample[1449:26262] Failed to create synchronous remote object proxy: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.032054+0100 RewardedVideoExample[1449:26262] [NetworkInfo] Descriptors query returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.032353+0100 RewardedVideoExample[1449:26262] Failed to create synchronous remote object proxy: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.032451+0100 RewardedVideoExample[1449:26262] [NetworkInfo] Descriptors query returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.035631+0100 RewardedVideoExample[1449:26262] Failed to create synchronous remote object proxy: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.035714+0100 RewardedVideoExample[1449:26262] [NetworkInfo] Descriptors query returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service named com.apple.commcenter.coretelephony.xpc was invalidated.}
2018-09-22 10:59:40.259658+0100 RewardedVideoExample[1449:26314] WF: === Starting WebFilter logging for process RewardedVideoExample
2018-09-22 10:59:40.259805+0100 RewardedVideoExample[1449:26314] WF: _userSettingsForUser : (null)
2018-09-22 10:59:40.259876+0100 RewardedVideoExample[1449:26314] WF: _WebFilterIsActive returning: NO
2018-09-22 10:59:41.020170+0100 RewardedVideoExample[1449:26282] <Google> Cannot find an ad network adapter with the name(s): com.google.DummyAdapter. Remember to link all required ad network adapters and SDKs, and set -ObjC in the 'Other Linker Flags' setting of your build target.
Reward based video ad failed to load: No ad returned from any ad server.
2018-09-22 11:00:09.288227+0100 RewardedVideoExample[1449:26168] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /Users/houmie/Library/Developer/CoreSimulator/Devices/3FF81C00-0DA2-4F98-8964-A84F14FB14A6/data/Containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2018-09-22 11:00:09.289859+0100 RewardedVideoExample[1449:26168] [MC] Reading from private effective user settings.

Answer 1

Running this in Terminal made it go away:

xcrun simctl spawn booted log config --mode "level:off"  --subsystem com.apple.CoreTelephony