本人就职于国际知名终端厂商，负责modem芯片研发。
在5G早期负责终端数据业务层、核心网相关的开发工作，目前牵头6G算力网络技术标准研究。

USIM App文件结构

解释USIM APP文件结构之前必须要先讲一下EF_DIR，这个文件记录着所有UICC中的Application AID，只有获取到应用对应的AID才能激活这个Application。

SELECT EF_DIR通过解析response data获取EF_DIR的record长度和record数，遍历EF_DIR的所有record查询需要的Application AID，EF_DIR的record包含以下信息：

这里面的AID value就是我们想要的，通过AID value便可激活对应的Application，享受对应的Application提供的功能。

USIM中的文件

Contents of files at the USIM ADF (Application DF) level
EF_LI (Language Indication)
EF_IMSI (IMSI)
EF_Keys (Ciphering and Integrity Keys)
EF_KeysPS (Ciphering and Integrity Keys for Packet Switched domain)
EF_PLMNwAcT(User controlled PLMN selector with Access Technology)
EF_HPPLMN (Higher Priority PLMN search period)
EF_ACMmax (ACM maximum value)
EF_UST (USIM Service Table)
EF_ACM (Accumulated Call Meter)
EF_GID1 (Group Identifier Level 1)
EF_GID2 (Group Identifier Level 2)
EF_SPN (Service Provider Name)
EF_PUCT (Price per Unit and Currency Table)
EF_CBMI (Cell Broadcast Message identifier selection)
EF_ACC (Access Control Class)
EF_FPLMN (Forbidden PLMNs)
EF_LOCI (Location Information)
EF_AD (Administrative Data)
EF_CBMID (Cell Broadcast Message Identifier for Data Download)
EF_ECC (Emergency Call Codes)
EF_CBMIR (Cell Broadcast Message Identifier Range selection)
EF_PSLOCI (Packet Switched location information)
EF_FDN (Fixed Dialling Numbers)
EF_SMS (Short messages)
EF_MSISDN (MSISDN)
EF_SMSP (Short message service parameters)
EF_SMSS (SMS status)
EF_SDN (Service Dialling Numbers)
EF_EXT2 (Extension2)
EF_EXT3 (Extension3)
EF_SMSR (Short message status reports)
EF_ICI (Incoming Call Information)
EF_OCI (Outgoing Call Information)
EF_ICT (Incoming Call Timer)
EF_OCT (Outgoing Call Timer)
EF_EXT5 (Extension5)
EF_CCP2 (Capability Configuration Parameters 2)
EF_eMLPP (enhanced Multi Level Precedence and Pre-emption)
EF_AaeM (Automatic Answer for eMLPP Service)
EF_Hiddenkey (Key for hidden phone book entries)
EF_BDN (Barred Dialling Numbers)
EF_EXT4 (Extension4)
EF_CMI (Comparison Method Information)
EF_EST (Enabled Services Table)
EF_ACL (Access Point Name Control List)
EF_DCK (Depersonalisation Control Keys)
EF_CNL (Co-operative Network List)
EF_START-HFN (Initialisation values for Hyperframe number)
EF_THRESHOLD (Maximum value of START)
EF_OPLMNwACT (Operator controlled PLMN selector with Access Technology)
EF_HPLMNwAcT (HPLMN selector with Access Technology)
EF_ARR (Access Rule Reference)
EF_NETPAR (Network Parameters)
EF_PNN (PLMN Network Name)
EF_OPL (Operator PLMN List)
EF_MBDN (Mailbox Dialling Numbers)
EF_EXT6 (Extension6)
EF_MBI (Mailbox Identifier)
EF_MWIS (Message Waiting Indication Status)
EF_CFIS (Call Forwarding Indication Status)
EF_EXT7 (Extension7)
EF_SPDI (Service Provider Display Information)
EF_MMSN (MMS Notification)
EF_EXT8 (Extension 8)
EF_MMSICP (MMS Issuer Connectivity Parameters)
EF_MMSUP (MMS User Preferences)
EF_MMSUCP (MMS User Connectivity Parameters)
EF_NIA (Network’s Indication of Alerting)
EF_VGCS (Voice Group Call Service)
EF_VGCSS (Voice Group Call Service Status)
EF_VBS (Voice Broadcast Service)
EF_VBSS (Voice Broadcast Service Status)
EF_VGCSCA (Voice Group Call Service Ciphering Algorithm)
EF_VBSCA (Voice Broadcast Service Ciphering Algorithm)
EF_GBABP (GBA Bootstrapping parameters)
EF_MSK (MBMS Service Keys List)
EF_MUK (MBMS User Key)
EF_GBANL (GBA NAF List)
EF_EHPLMN (Equivalent HPLMN)
EF_EHPLMNPI (Equivalent HPLMN Presentation Indication)
EF_LRPLMNSI (Last RPLMN Selection Indication)
EF_NAFKCA (NAF Key Centre Address)
EF_SPNI (Service Provider Name Icon)
EF_PNNI (PLMN Network Name Icon)
EF_NCP-IP (Network Connectivity Parameters for USIM IP connections)
EF_EPSLOCI (EPS location information)
EF_EPSNSC (EPS NAS Security Context)
EF_UFC (USAT Facility Control)
EF_NASCONFIG (Non Access Stratum Configuration)
EF_UICCIARI (UICC IARI)
EF_PWS (Public Warning System)
EF_FDNURI (Fixed Dialling Numbers URI)
EF_BDNURI (Barred Dialling Numbers URI)
EF_SDNURI (Service Dialling Numbers URI)
EF_IWL (IMEI(SV) White Lists)
EF_IPS (IMEI(SV) Pairing Status)
EF_IPD (IMEI(SV) of Pairing Device)
EF_ePDGId (Home ePDG Identifier)
EF_{ePDGSelection} (ePDG Selection Information)
EF_ePDGIdEm (Emergency ePDG Identifier)
EF_{ePDGSelectionEm} (ePDG Selection Information for Emergency Services)
EF_{FromPreferred} (From Preferred)
EF_{IMSConfigData} (IMS Configuration Data)
EF_TVCONFIG (TV Configuration)
EF_{3GPPPSDATAOFF} (3GPP PS Data Off)
EF_{3GPPPSDATAOFFservicelist} (3GPP PS Data Off Service List)
EF_{XCAPConfigData} (XCAP Configuration Data)
EF_EARFCNList (EARFCN list for MTC/NB-IOT UEs)
EF_{MuDMiDConfigData} (MuD and MiD Configuration Data)

Contents of files at the DF SoLSA level
EF_SAI (SoLSA Access Indicator)
EF_SLL (SoLSA LSA List)

Contents of files at the DF PHONEBOOK level
EF_PBR (Phone Book Reference file)
EF_IAP (Index Administration Phone book)
EF_ADN (Abbreviated dialling numbers)
EF_EXT1 (Extension1)
EF_PBC (Phone Book Control)
EF_GRP (Grouping file)
EF_AAS (Additional number Alpha String)
EF_GAS (Grouping information Alpha String)
EF_ANR (Additional Number)
EF_SNE (Second Name Entry)
EF_CCP1 (Capability Configuration Parameters 1)
EF_UID (Unique Identifier)
EF_PSC (Phone book Synchronisation Counter)
EF_CC (Change Counter)
EF_PUID (Previous Unique Identifier)
EF_EMAIL (e-mail address)
EF_PURI (Phonebook URIs)

Contents of files at the DF GSM-ACCESS level (Files required for GSM Access)
EF_Kc (GSM Ciphering key Kc)
EF_KcGPRS (GPRS Ciphering key KcGPRS)
EF_CPBCCH (CPBCCH Information)
EF_InvScan (Investigation Scan)

Contents of files at the MexE level
EF_MexE-ST (MexE Service table)
EF_ORPK (Operator Root Public Key)
EF_ARPK (Administrator Root Public Key)
EF_TPRPK (Third Party Root Public Key)
EF_TKCDF (Trusted Key/Certificates Data Files)

Contents of files at the DF WLAN level
EF_Pseudo (Pseudonym)
EF_UPLMNWLAN (User controlled PLMN selector for I-WLAN Access)
EF_OPLMNWLAN (Operator controlled PLMN selector for I-WLAN Access)
EF_UWSIDL (User controlled WLAN Specific Identifier List)
EF_OWSIDL (Operator controlled WLAN Specific IdentifierList)
EF_WRI (WLAN Reauthentication Identity)
EF_HWSIDL (Home I-WLAN Specific Identifier List)
EF_WEHPLMNPI (I-WLAN Equivalent HPLMN Presentation Indication)
EF_WHPI (I-WLAN HPLMN Priority Indication)
EF_WLRPLMN (I-WLAN Last Registered PLMN)
EF_HPLMNDAI (HPLMN Direct Access Indicator)

Contents of files at the DF HNB level
EF_ACSGL (Allowed CSG Lists)
EF_CSGT (CSG Type)
EF_HNBN (Home NodeB Name)
EF_OCSGL (Operator CSG Lists)
EF_OCSGT (Operator CSG Type)
EF_OHNBN (Operator Home NodeB Name)

Contents of files at the DF ProSe level
EF_{PROSE_MON} (ProSe Monitoring Parameters)
EF_{PROSE_ANN} (ProSe Announcing Parameters)
EF_PROSEFUNC (HPLMN ProSe Function)
EF_{PROSE_RADIO_COM} (ProSe Direct Communication Radio Parameters)
EF_{PROSE_RADIO_MON} (ProSe Direct Discovery Monitoring Radio Parameters)
EF_{PROSE_RADIO_ANN} (ProSe Direct Discovery Announcing Radio Parameters)
EF_{PROSE_POLICY} (ProSe Policy Parameters)
EF_{PROSE_PLMN} (ProSe PLMN Parameters)
EF_{PROSE_GC} (ProSe Group Counter)
EF_PST (ProSe Service Table)
EF_{PROSE_UIRC} (ProSe UsageInformationReportingConfiguration)
EF_{PROSE_GM_DISCOVERY} (ProSe Group Member Discovery Parameters)
EF_{PROSE_RELAY} (ProSe Relay Parameters)
EF_{PROSE_RELAY_DISCOVERY} (ProSe Relay Discovery Parameters)

Contents of files at the DF ACDC level
EF_{ACDC_LIST} (ACDC List)
EF_{ACDC_OS_CONFIG} (ACDC OS configuration)

Contents of files at the DF TV level
EF_TVUSD (TV User Service Description)

Contents of files at the DF5GS level
EF_5GS3GPPLOCI (5GS 3GPP location information)
EF_5GSN3GPPLOCI (5GS non-3GPP location information)
EF_5GS3GPPNSC (5GS 3GPP Access NAS Security Context)
EF_5GSN3GPPNSC (5GS non-3GPP Access NAS Security Context)
EF_5GAUTHKEYS (5G authentication keys)
EF_{UAC_AIC} (UAC Access Identities Configuration)
EF_{SUCI_Calc_Info} (Subscription Concealed Identifier Calculation Information EF)
EF_OPL5G (5GS Operator PLMN List)
EF_{SUPI_NAI} (SUPI as Network Access Identifier)
EF_{Routing_Indicator} (Routing Indicator EF)
EF_URSP (URSP)
EF_TN3GPPSNN (Trusted non-3GPP Serving network names list)
EF_CAG (Pre-configured CAG information list EF)

Contents of Efs at the TELECOM level
EF_ADN (Abbreviated dialling numbers)
EF_EXT1 (Extension1)
EF_ECCP (Extended Capability Configuration Parameter)
EF_SUME (SetUpMenu Elements)
EF_ARR (Access Rule Reference)
EF_{ICE_DN} (In Case of Emergency – Dialling Number)
EF_{ICE_FF} (In Case of Emergency – Free Format)
EF_RMA (Remote Management Actions)
EF_PSISMSC (Public Service Identity of the SM-SC)

Contents of files at the DFGRAPHICS level
EF_IMG (Image)
EF_IIDF (Image Instance Data Files)
EF_{ICE_graphics} (In Case of Emergency – Graphics)

Contents of files at the DFMULTIMEDIA level
EF_MML (Multimedia Messages List)
EF_MMDF (Multimedia Messages Data File)

Contents of files at the DFMCS level
EF_MST (MCS Service Table)
EF~MCS_ CONFIG~ (MCS configuration data)

Contents of files at the DFV2X level
EF_VST (V2X Service Table)
EF_{V2X_CONFIG} (V2X configuration data)
EF_{V2XP_PC5} (V2X data policy over PC5)
EF_{V2XP_Uu} (V2X data policy over Uu)

上述这些文件对应的文件内容，文件格式，以及访问权限要求，参考TS31.102

我们这里介绍几个常用的文件

EF_LI (Language Indication)
这个文件是开机必读的文件，它记录了用户的语言优先级，文件结构如下图：

EF_IMSI (IMSI)
这个文件用处很多，例如用户手机初始注网时有可能就会用到这个文件中的值，文件结构如下图：

IMSI Bit信息如下图：

EF_PLMNwAcT (User controlled PLMN selector with Access Technology)
这文件记录了用户级下的不同网络制式的PLMN优先级列表，可以用于初始搜网过程，文件结构如下图：

网络制式Bit信息如下表：

EF_FPLMN (Forbidden PLMNs)
这个文件中记录的PLMN都是禁用的，可以规避一些伪基站和一些异常PLMNs，文件结构如下图：

EF_AD (Administrative Data)
这个文件可以获取MNC的长度，从而确定HPLMN，当然还有一些其他的信息，文件结构如下图（详细信息查阅TS31.102）：

EF_NASCONFIG (Non Access Stratum Configuration)
这个文件也是开机必读的，用于NAS配置，关系到用户的网络体验，结构比较复杂（详细信息查阅TS31.102）如下图：

返回系列目录

最后

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