Each phone's own settings and modem file, against what that phone had before.
{ "SupportedEntitlements": 209, "ProtocolVersion": "2", "ServerAddress": "https://aes.mnc001.mcc340.pub.3gppnetwork.org:8181/ium-OEMInterface/servlet/IUMServlet", "Authentication": { "Type": 1, "Username": "0$IMSI@nai.epc.mnc$MNC.mcc$MCC.3gppnetwork.org" }, "UserAgent": "Entitlement/$version ($device) iOS/$iOSVersion Carrier Settings/$carrierBundleVersion", "UpdatePeriod": 24 }