[Samsung Galaxy Note 8 ROMs, Kernels, Recoveries, &] ajm786:
I figured this one out too.

Even if you change the CSC strings to allow to use caller ID/spam protection and use the Places feature in the Phone app, it will never actually function.

The reason for this is because the N950N stock ROM does not have the Hiya backend service apk necessary to make these things work. I found the apk in another ROM.

Anyway, here is my current cscfeatures.xml. I am on AT&T. I hate bloatware, so I installed the XAA (unbranded) CSC for the US.

<?xml version="1.0" encoding="UTF-8"?>
<SamsungMobileFeature>
<Version>ED00023</Version>
<Country>USA</Country>
<CountryISO>US</CountryISO>
<SalesCode>XAA</SalesCode>
<FeatureSet>
<CscFeature_Setting_SupportDataUsageReminder>TRUE</CscFeature_Setting_SupportDataUsageReminder>
<CscFeature_Message_DisplaySmsTimeAs>server</CscFeature_Message_DisplaySmsTimeAs>
<CscFeature_Message_DisplayMmsTimeAs>server</CscFeature_Message_DisplayMmsTimeAs>
<CscFeature_Sip_EnableSymbolInSecondary>en_GB;en_US</CscFeature_Sip_EnableSymbolInSecondary>
<CscFeature_Common_SupportWcdmaInSlave>true</CscFeature_Common_SupportWcdmaInSlave>
<CscFeature_Web_AddOptionToTerminate>true</CscFeature_Web_AddOptionToTerminate>
<CscFeature_Web_EnablePromptToExit>true</CscFeature_Web_EnablePromptToExit>
<CscFeature_Setting_SupportDataUsageReminder>TRUE</CscFeature_Setting_SupportDataUsageReminder>
<CscFeature_Wifi_SupportMobileApOnTrigger>TRUE</CscFeature_Wifi_SupportMobileApOnTrigger>
<CscFeature_VoiceCall_ConfigRecording>RecordingAllowed</CscFeature_VoiceCall_ConfigRecording>
<CscFeature_SystemUI_SupportDataUsageViewOnQuickPanel>TRUE</CscFeature_SystemUI_SupportDataUsageViewOnQuickPanel>
<CscFeature_SystemUI_SupportRecentAppProtection>TRUE</CscFeature_SystemUI_SupportRecentAppProtection>
<CscFeature_SystemUI_SupportAssistanceAppChooser>TRUE</CscFeature_SystemUI_SupportAssistanceAppChooser>
<CscFeature_SystemUI_ConfigMaxRssiLevel>5<CscFeature_SystemUI_ConfigMaxRssiLevel>
<CscFeature_Setting_CustNetworkSelMenu4>LTEONLY</CscFeature_Setting_CustNetworkSelMenu4>
<CscFeature_Setting_SupportRealTimeNetworkSpeed>TRUE</CscFeature_Setting_SupportRealTimeNetworkSpeed>
<CscFeature_Setting_EnableMenuBlockCallMsg>TRUE</CscFeature_Setting_EnableMenuBlockCallMsg>
<CscFeature_Message_EnableSpamFilteringEngine>TRUE</CscFeature_Message_EnableSpamFilteringEngine>
<CscFeature_RIL_ForceConnectMMS>TRUE</CscFeature_RIL_ForceConnectMMS>
<CscFeature_Message_ImageResizeQualityFactorWhenAttach>TRUE</CscFeature_Message_ImageResizeQualityFactorWhenAttach>
<CscFeature_Message_EnableSMSPcheckWhenSendSMS>TRUE</CscFeature_Message_EnableSMSPcheckWhenSendSMS>
<CscFeature_Message_EnableMenuMmsDeliveryTime>TRUE</CscFeature_Message_EnableMenuMmsDeliveryTime>
<CscFeature_Message_AddSendOptionInComposer>TRUE</CscFeature_Message_AddSendOptionInComposer>
<CscFeature_Message_DisableSmsToMmsConversionByTextInput>TRUE</CscFeature_Message_DisableSmsToMmsConversionByTextInput>
<CscFeature_Message_EnableMsgTypeIndicationDuringComposing>TRUE</CscFeature_Message_EnableMsgTypeIndicationDuringComposing>
<CscFeature_Message_EnableSaveVMessage>TRUE</CscFeature_Message_EnableSaveVMessage>
<CscFeature_Message_EnableSaveRestoreSDCard>TRUE</CscFeature_Message_EnableSaveRestoreSDCard>
<CscFeature_Common_EnableAirMessage>TRUE</CscFeature_Common_EnableAirMessage>
<CscFeature_Camera_ShutterSoundMenu>TRUE</CscFeature_Camera_ShutterSoundMenu>
<CscFeature_Camera_EnableCameraDuringCall>TRUE</CscFeature_Camera_EnableCameraDuringCall>
<CscFeature_Audio_ConfigActionVolumeKey>Silent</CscFeature_Audio_ConfigActionVolumeKey>
<CscFeature_Audio_ConfigCallVolumeSteps>7</CscFeature_Audio_ConfigCallVolumeSteps>
<CscFeature_BT_ConfigNetAccessTypeForPANNAP>GSM</CscFeature_BT_ConfigNetAccessTypeForPANNAP>
<CscFeature_BT_DisableSAP>TRUE</CscFeature_BT_DisableSAP>
<CscFeature_Calendar_EnableShiftedWeekNumber>TRUE</CscFeature_Calendar_EnableShiftedWeekNumber>
<CscFeature_Calendar_SetColorOfDays>XXXXXXX</CscFeature_Calendar_SetColorOfDays>
<CscFeature_Camera_CameraFlicker>60hz</CscFeature_Camera_CameraFlicker>
<CscFeature_Common_AutoConfigurationType>XAA,SIMBASED_OMC</CscFeature_Common_AutoConfigurationType>
<CscFeature_Common_ConfigAllowedPackagesDuringDataSaving>com.samsung.android.smartcallprovider</CscFeature_Common_ConfigAllowedPackagesDuringDataSaving>
<CscFeature_Common_ConfigDefSprBrand>SPR</CscFeature_Common_ConfigDefSprBrand>
<CscFeature_Common_ConfigEmergencyModePackages>com.ipsec.service,com.sec.android.providers.iwlansettings,com.sec.android.providers.mapcon,com.republicwireless.tel</CscFeature_Common_ConfigEmergencyModePackages>
<CscFeature_Common_ConfigMarketInfoVariation>Disable</CscFeature_Common_ConfigMarketInfoVariation>
<CscFeature_Common_ConfigNetworkModeDuringEmergency>NOCHANGE</CscFeature_Common_ConfigNetworkModeDuringEmergency>
<CscFeature_Common_ConfigOperatorDrmReq>blockWMDRM,BlockPlayReadyDRM</CscFeature_Common_ConfigOperatorDrmReq>
<CscFeature_Common_ConfigPco>COMMON</CscFeature_Common_ConfigPco>
<CscFeature_Common_ConfigSvcProviderForUnknownNumber>whitepages,whitepages,whitepages</CscFeature_Common_ConfigSvcProviderForUnknownNumber>
<CscFeature_Contact_SupportWhitePages>TRUE</CscFeature_Contact_SupportWhitePages>
<CscFeature_Contact_ConfigOpStyleVariation>XAA</CscFeature_Contact_ConfigOpStyleVariation>
<CscFeature_SmartPage_ConfigLocalization>*US,+Giphy</CscFeature_SmartPage_ConfigLocalization>
<CscFeature_Common_SupportDLNA>DMC_ONLY</CscFeature_Common_SupportDLNA>
<CscFeature_Common_SupportMinimizedSip>TRUE</CscFeature_Common_SupportMinimizedSip>
<CscFeature_Common_SupportNextRadio>TRUE</CscFeature_Common_SupportNextRadio>
<CscFeature_Common_SupportSecWFC>TRUE</CscFeature_Common_SupportSecWFC>
<CscFeature_Contact_ConfigImsOpStyle>XAA</CscFeature_Contact_ConfigImsOpStyle>
<CscFeature_Contact_DisableSipAddress>TRUE</CscFeature_Contact_DisableSipAddress>
<CscFeature_Contact_ExtendSpeedDialTo100>TRUE</CscFeature_Contact_ExtendSpeedDialTo100>
<CscFeature_Framework_2ndScreenConfig>ruler_default_unit,inch;</CscFeature_Framework_2ndScreenConfig>
<CscFeature_Framework_ConfigBlockNotiOperation>Longpress</CscFeature_Framework_ConfigBlockNotiOperation>
<CscFeature_Framework_DisableDoubleTapTextSelection>TRUE</CscFeature_Framework_DisableDoubleTapTextSelection>
<CscFeature_Framework_SupportResolverActivityGuide>TRUE</CscFeature_Framework_SupportResolverActivityGuide>
<CscFeature_GMS_DisableSetupWizard>TRUE</CscFeature_GMS_DisableSetupWizard>
<CscFeature_GMS_SetFrpPersistent>TRUE</CscFeature_GMS_SetFrpPersistent>
<CscFeature_IMS_EnableRCSe>FALSE</CscFeature_IMS_EnableRCSe>
<CscFeature_IMS_SupportNoSIME911>TRUE</CscFeature_IMS_SupportNoSIME911>
<CscFeature_Launcher_ConfigHomeAppsStructure>support_homeonly_homeapps</CscFeature_Launcher_ConfigHomeAppsStructure>
<CscFeature_Launcher_ConfigMagazineHome>disable</CscFeature_Launcher_ConfigMagazineHome>
<CscFeature_Launcher_SupportFolderSubMenuDuringEditMode>TRUE</CscFeature_Launcher_SupportFolderSubMenuDuringEditMode>
<CscFeature_Launcher_SupportGuideTextForEmptyPage>TRUE</CscFeature_Launcher_SupportGuideTextForEmptyPage>
<CscFeature_LockScreen_ConfigDisplayShorcutCircleArrow>US_NORTH</CscFeature_LockScreen_ConfigDisplayShorcutCircleArrow>
<CscFeature_Message_CMASOperator>us-xaa</CscFeature_Message_CMASOperator>
<CscFeature_Message_ConfigFreeMessage>off</CscFeature_Message_ConfigFreeMessage>
<CscFeature_Message_DisableChooserForUrlLink>TRUE</CscFeature_Message_DisableChooserForUrlLink>
<CscFeature_Message_DisableMenuMmsCreationMode>TRUE</CscFeature_Message_DisableMenuMmsCreationMode>
<CscFeature_Message_DisableMenuWapPush>TRUE</CscFeature_Message_DisableMenuWapPush>
<CscFeature_Message_DisableMenuWapPushServiceLoading>TRUE</CscFeature_Message_DisableMenuWapPushServiceLoading>
<CscFeature_Message_MMSMaxCharPerSlide>2000</CscFeature_Message_MMSMaxCharPerSlide>
<CscFeature_Message_MmsModeCaptureVideoBitRate>0</CscFeature_Message_MmsModeCaptureVideoBitRate>
<CscFeature_Message_MmsModeCaptureVideoMaxDuration>0</CscFeature_Message_MmsModeCaptureVideoMaxDuration>
<CscFeature_Music_SupportBatteryAdcThreshold>TRUE</CscFeature_Music_SupportBatteryAdcThreshold>
<CscFeature_NFC_ConfigAdvancedSettings>Disable</CscFeature_NFC_ConfigAdvancedSettings>
<CscFeature_NFC_ConfigCardmodeRoutingTypeForHce>ROUTE_ON_WHEN_SCREEN_ON</CscFeature_NFC_ConfigCardmodeRoutingTypeForHce>
<CscFeature_NFC_ConfigDynamicFirmwareLoading>USA</CscFeature_NFC_ConfigDynamicFirmwareLoading>
<CscFeature_NFC_DefStatus>ON</CscFeature_NFC_DefStatus>
<CscFeature_NFC_DefaultCardModeConfig>DH:ESE</CscFeature_NFC_DefaultCardModeConfig>
<CscFeature_NFC_DisableUiccCardMode>TRUE</CscFeature_NFC_DisableUiccCardMode>
<CscFeature_SNote_DisableMuse>TRUE</CscFeature_SNote_DisableMuse>
<CscFeature_SSRM_ConfigStandbyTime>280000,933</CscFeature_SSRM_ConfigStandbyTime>
<CscFeature_SSRM_SupportGmsBundling>TRUE</CscFeature_SSRM_SupportGmsBundling>
<CscFeature_Setting_ConfigAccessibilityInHearingAids>1</CscFeature_Setting_ConfigAccessibilityInHearingAids>
<CscFeature_Setting_ConfigOpMenuStructure>Global</CscFeature_Setting_ConfigOpMenuStructure>
<CscFeature_Setting_ConfigTypeHelp>1</CscFeature_Setting_ConfigTypeHelp>
<CscFeature_Setting_SupportHAC>TRUE</CscFeature_Setting_SupportHAC>
<CscFeature_SetupWizard_ConfigStepSequenceType>VanillaStep</CscFeature_SetupWizard_ConfigStepSequenceType>
<CscFeature_Sip_ConfigOpBranding>XAA</CscFeature_Sip_ConfigOpBranding>
<CscFeature_SmartcardSvc_SetAccessControlType>GPAC,GAC,POSTLOAD</CscFeature_SmartcardSvc_SetAccessControlType>
<CscFeature_SyncML_ConfigDevicePreId>IMEI</CscFeature_SyncML_ConfigDevicePreId>
<CscFeature_SyncML_ConfigGroupOpCode>USOpen</CscFeature_SyncML_ConfigGroupOpCode>
<CscFeature_SyncML_ConfigOmcDomainRegion>us</CscFeature_SyncML_ConfigOmcDomainRegion>
<CscFeature_SyncML_DefaultLocalConfig>United States,us,310</CscFeature_SyncML_DefaultLocalConfig>
<CscFeature_SyncML_DisableDisclaimerSelectCountryList4SwUpdate>TRUE</CscFeature_SyncML_DisableDisclaimerSelectCountryList4SwUpdate>
<CscFeature_SystemUI_BlockDoubleTapNotiOnLockScreen>TRUE</CscFeature_SystemUI_BlockDoubleTapNotiOnLockScreen>
<CscFeature_SystemUI_ConfigOverrideDataIcon>LTE</CscFeature_SystemUI_ConfigOverrideDataIcon>
<CscFeature_SystemUI_SupportNoSimNotification>TRUE</CscFeature_SystemUI_SupportNoSimNotification>
<CscFeature_VT_ConfigBearer>-CSVT</CscFeature_VT_ConfigBearer>
<CscFeature_VT_ConfigOpStyleForSetting>removevtsetting</CscFeature_VT_ConfigOpStyleForSetting>
<CscFeature_Video_ConfigOpStyleForSubTitle>USA</CscFeature_Video_ConfigOpStyleForSubTitle>
<CscFeature_Video_SupportManualBrightness>TRUE</CscFeature_Video_SupportManualBrightness>
<CscFeature_Vision_ConfigImageSearch>PTRXX</CscFeature_Vision_ConfigImageSearch>
<CscFeature_Vision_ConfigPlace>FSRXX</CscFeature_Vision_ConfigPlace>
<CscFeature_Vision_ConfigPlaceUnit>FETXX</CscFeature_Vision_ConfigPlaceUnit>
<CscFeature_Vision_ConfigShopping>AMZUS</CscFeature_Vision_ConfigShopping>
<CscFeature_Vision_ConfigTextTranslator>GGLXX</CscFeature_Vision_ConfigTextTranslator>
<CscFeature_Vision_ConfigWine>VVNXX</CscFeature_Vision_ConfigWine>
<CscFeature_VoiceCall_ConfigOpStyleForBusyTone>SUBBUSY</CscFeature_VoiceCall_ConfigOpStyleForBusyTone>
<CscFeature_VoiceCall_ConfigOpStyleForHdIcon>DisableHdOnLog,NOHD</CscFeature_VoiceCall_ConfigOpStyleForHdIcon>
<CscFeature_VoiceCall_ConfigOpStyleForLocalDtmf>ALWAYS</CscFeature_VoiceCall_ConfigOpStyleForLocalDtmf>
<CscFeature_VoiceCall_ConfigOpStyleForRingBackTone>USACDMA</CscFeature_VoiceCall_ConfigOpStyleForRingBackTone>
<CscFeature_VoiceCall_ConfigOpStyleForVolte>USOPEN_MENU</CscFeature_VoiceCall_ConfigOpStyleForVolte>
<CscFeature_VoiceCall_ConfigVolteCallWaitingSource>network</CscFeature_VoiceCall_ConfigVolteCallWaitingSource>
<CscFeature_VoiceCall_DisableCallTransfer>TRUE</CscFeature_VoiceCall_DisableCallTransfer>
<CscFeature_VoiceCall_SupportMenuForVoicePrivacy>TRUE</CscFeature_VoiceCall_SupportMenuForVoicePrivacy>
<CscFeature_VoiceCall_SupportPopupForDataOff>TRUE</CscFeature_VoiceCall_SupportPopupForDataOff>
<CscFeature_VoiceCall_SupportTTY>TRUE</CscFeature_VoiceCall_SupportTTY>
<CscFeature_VoiceCall_SupportVolteHoldTone>NOT</CscFeature_VoiceCall_SupportVolteHoldTone>
<CscFeature_Weather_ConfigCpType>TWC</CscFeature_Weather_ConfigCpType>
<CscFeature_Weather_ConfigDefRefreshInterval>3</CscFeature_Weather_ConfigDefRefreshInterval>
<CscFeature_Weather_ConfigDefTempUnit>0</CscFeature_Weather_ConfigDefTempUnit>
<CscFeature_Weather_SupportPromptForDataUsage>TRUE</CscFeature_Weather_SupportPromptForDataUsage>
<CscFeature_Weather_SupportPromptForLocationAccess>TRUE</CscFeature_Weather_SupportPromptForLocationAccess>
<CscFeature_Wifi_AdjustTxPowerDuringCalling>TRUE</CscFeature_Wifi_AdjustTxPowerDuringCalling>
<CscFeature_Wifi_EnableDetailEapErrorCodesAndState>FALSE</CscFeature_Wifi_EnableDetailEapErrorCodesAndState>
<CscFeature_Wifi_SupportAdvancedMenu>TRUE</CscFeature_Wifi_SupportAdvancedMenu>
<CscFeature_Wifi_SupportMobileAp5G>TRUE</CscFeature_Wifi_SupportMobileAp5G>
<CscFeature_Wifi_SupportMobileApOnTrigger>FALSE</CscFeature_Wifi_SupportMobileApOnTrigger>
<CscFeature_Wifi_SupportNotificationMenu>TRUE</CscFeature_Wifi_SupportNotificationMenu>
<CscFeature_Wifi_SupportRssiPollStateDuringWifiCalling>TRUE</CscFeature_Wifi_SupportRssiPollStateDuringWifiCalling>
<CscFeature_Wifi_SupportWpsPin>TRUE</CscFeature_Wifi_SupportWpsPin>
</FeatureSet>
</SamsungMobileFeature>

To get Caller ID/Spam protection and Places working, do the following:

1. Create a new folder in /system/app. Name it "HiyaService". This means that the directory will be /system/app/HiyaService.

2. Download HiyaService.apk, copy or move it into the HiyaService folder you just created.

3. *IMPORTANT!* Change the permissions of the app to -rw-r--r-- (0644).

4. Reboot.

After you reboot, go into the Phone app. If you enable the Caller ID/Spam protection and Places features, they should start working. Try making a few phone calls, and check the Places tab for local restaurants and stuff.

Logcat was very crucial in helping me find the answers to all these issues. I hope this helps any of you who are trying to use a default, stock, N950N ROM with a US carrier.