This tool converts carrier config and APNs from XML format to protobuf format. AOSP default carrier configs can be found in packages/apps/CarrierConfig, and APNs in device/sample/etc/apns-full-conf.xml. Usage: $ source build/envsetup.sh $ lunch foo_bar $ croot $ source <path>/main.sh The commands above build the tool from source code and run them. This tool is best supported on Android 11 code base. See additional steps in bin/README.md run it on Android 10.