APN configuration file directory: vendor/sprd/telephony-res/apn , as shown in the figure:
Android1~9 , APN configuration file path: vendor/sprd/telephony-res/apn/apns-conf_8.xml
Android10~12 , APN configuration file path: vendor/sprd/telephony-res/apn/apns-conf_8_v2.xml
Android13 , APN configuration file path: vendor/sprd/telephony-res/apn/apns-conf_8_v3.xml
Note: Most of the projects that the author is currently in contact with are the source code of Zhanrui chips, so I have a question, are the source code configuration files of different chip manufacturers different?