Same as com.android.carrierconfig? Here's that description: Dynamically provides configuration for the carrier network. The config contains: Roaming networks, Voicemail settings, SMS/MMS settings, VoLTE/IMS settings, and more. If a carrier app is installed it will be queried for overrides to these settings. Seems to run on boot and when you swap SIM card? https://source.android.com/devices/tech/config/carrier https://cs.android.com/android/platform/superproject/+/master:packages/apps/CarrierConfig/src/com/android/carrierconfig/DefaultCarrierConfigService.java
Phones target this application