diff --git a/dom/system/gonk/ril_consts.js b/dom/system/gonk/ril_consts.js
index 31d3e30c9e5..1b8a3d6c8ab 100644
--- a/dom/system/gonk/ril_consts.js
+++ b/dom/system/gonk/ril_consts.js
@@ -441,6 +441,10 @@ this.ICC_EF_MWIS   = 0x6fca;
 this.ICC_EF_CFIS   = 0x6fcb;
 this.ICC_EF_SPDI   = 0x6fcd;
 
+// CSIM files
+this.ICC_EF_CSIM_CDMAHOME = 0x6f28;
+this.ICC_EF_CSIM_CST      = 0x6f32; // CDMA Service table
+
 this.ICC_PHASE_1 = 0x00;
 this.ICC_PHASE_2 = 0x02;
 this.ICC_PHASE_2_PROFILE_DOWNLOAD_REQUIRED = 0x03;
@@ -498,6 +502,7 @@ this.EF_PATH_MF_SIM       = "3f00";
 this.EF_PATH_DF_PHONEBOOK = "5f3a";
 this.EF_PATH_DF_TELECOM   = "7f10";
 this.EF_PATH_DF_GSM       = "7f20";
+this.EF_PATH_DF_CDMA      = "7f25";
 this.EF_PATH_ADF_USIM     = "7fff";
 
 // Status code of sw1 for ICC I/O,
@@ -1066,6 +1071,9 @@ this.GECKO_ICC_SERVICES = {
     PNN: 45,
     OPL: 46,
     SPDI: 51
+  },
+  ruim: {
+    SPN: 17
   }
 };
 
diff --git a/dom/system/gonk/ril_worker.js b/dom/system/gonk/ril_worker.js
index 9dc2bda0417..16c3d910e97 100644
--- a/dom/system/gonk/ril_worker.js
+++ b/dom/system/gonk/ril_worker.js
@@ -797,6 +797,11 @@ let RIL = {
      */
     this.iccInfo = {};
 
+    /**
+     * CDMA specific information. ex. CDMA Network ID, CDMA System ID... etc.
+     */
+    this.cdmaHome = null;
+
     /**
      * Application identification for apps in ICC.
      */
@@ -2714,8 +2719,8 @@ let RIL = {
       return;
     }
 
-    // TODO: Bug 726098, change to use cdmaSubscriptionAppIndex when in CDMA.
-    let index = iccStatus.gsmUmtsSubscriptionAppIndex;
+    let index = this._isCdma ? iccStatus.cdmaSubscriptionAppIndex :
+                               iccStatus.gsmUmtsSubscriptionAppIndex;
     let app = iccStatus.apps[index];
     if (!app) {
       if (DEBUG) {
@@ -2768,10 +2773,14 @@ let RIL = {
       // Other types of ICC we can send Terminal_Profile immediately.
       if (this.appType == CARD_APPTYPE_SIM) {
         ICCRecordHelper.getICCPhase();
-      } else {
+        ICCRecordHelper.fetchICCRecords();
+      } else if (this.appType == CARD_APPTYPE_USIM) {
         this.sendStkTerminalProfile(STK_SUPPORTED_TERMINAL_PROFILE);
+        ICCRecordHelper.fetchICCRecords();
+      } else if (this.appType == CARD_APPTYPE_RUIM) {
+        this.sendStkTerminalProfile(STK_SUPPORTED_TERMINAL_PROFILE);
+        RuimRecordHelper.fetchRuimRecords();
       }
-      ICCRecordHelper.fetchICCRecords();
       this.reportStkServiceIsRunning();
     }
 
@@ -2930,10 +2939,7 @@ let RIL = {
       RIL.getSMSCAddress();
     }
 
-    // TODO: This zombie code branch that will be raised from the dead once
-    // we add explicit CDMA support everywhere (bug 726098).
-    let cdma = false;
-    if (cdma) {
+    if (this._isCdma) {
       let baseStationId = RIL.parseInt(state[4]);
       let baseStationLatitude = RIL.parseInt(state[5]);
       let baseStationLongitude = RIL.parseInt(state[6]);
@@ -8441,6 +8447,19 @@ let ICCFileHelper = {
     }
   },
 
+  /**
+   * This function handles EFs for RUIM
+   */
+  getRuimEFPath: function getRuimEFPath(fileId) {
+    switch(fileId) {
+      case ICC_EF_CSIM_CDMAHOME:
+      case ICC_EF_CSIM_CST:
+        return EF_PATH_MF_SIM + EF_PATH_DF_CDMA;
+      default:
+        return null;
+    }
+  },
+
   /**
    * Helper function for getting the pathId for the specific ICC record
    * depeding on which type of ICC card we are using.
@@ -8450,13 +8469,7 @@ let ICCFileHelper = {
    * @return The pathId or null in case of an error or invalid input.
    */
   getEFPath: function getEFPath(fileId) {
-    // TODO: Bug 726098, change to use cdmaSubscriptionAppIndex when in CDMA.
-    let index = RIL.iccStatus.gsmUmtsSubscriptionAppIndex;
-    if (index == -1) {
-      return null;
-    }
-    let app = RIL.iccStatus.apps[index];
-    if (!app) {
+    if (RIL.appType == null) {
       return null;
     }
 
@@ -8465,15 +8478,17 @@ let ICCFileHelper = {
       return path;
     }
 
-    switch (app.app_type) {
+    switch (RIL.appType) {
       case CARD_APPTYPE_SIM:
         return this.getSimEFPath(fileId);
       case CARD_APPTYPE_USIM:
         return this.getUSimEFPath(fileId);
+      case CARD_APPTYPE_RUIM:
+        return this.getRuimEFPath(fileId);
       default:
         return null;
     }
-  },
+  }
 };
 
 /**
@@ -9793,9 +9808,10 @@ let ICCUtilsHelper = {
    * @return true if the service is enabled, false otherwise.
    */
   isICCServiceAvailable: function isICCServiceAvailable(geckoService) {
-    let serviceTable = RIL.iccInfoPrivate.sst;
+    let serviceTable = RIL._isCdma ? RIL.iccInfoPrivate.cst:
+                                     RIL.iccInfoPrivate.sst;
     let index, bitmask;
-    if (RIL.appType == CARD_APPTYPE_SIM) {
+    if (RIL.appType == CARD_APPTYPE_SIM || RIL.appType == CARD_APPTYPE_RUIM) {
       /**
        * Service id is valid in 1..N, and 2 bits are used to code each service.
        *
@@ -9810,14 +9826,19 @@ let ICCUtilsHelper = {
        *
        * @see 3GPP TS 51.011 10.3.7.
        */
-      let simService = GECKO_ICC_SERVICES.sim[geckoService];
+      let simService;
+      if (RIL.appType == CARD_APPTYPE_SIM) {
+        simService = GECKO_ICC_SERVICES.sim[geckoService];
+      } else {
+        simService = GECKO_ICC_SERVICES.ruim[geckoService];
+      }
       if (!simService) {
         return false;
       }
       simService -= 1;
       index = Math.floor(simService / 4);
       bitmask = 2 << ((simService % 4) << 1);
-    } else {
+    } else if (RIL.appType == CARD_APPTYPE_USIM) {
       /**
        * Service id is valid in 1..N, and 1 bit is used to code each service.
        *
@@ -10157,6 +10178,73 @@ let ICCContactHelper = {
   },
 };
 
+let RuimRecordHelper = {
+  fetchRuimRecords: function fetchRuimRecords() {
+    ICCRecordHelper.getICCID();
+    RIL.getIMSI();
+    this.readCST();
+    this.readCDMAHome();
+  },
+
+  /**
+   * Read CDMAHOME for CSIM.
+   * See 3GPP2 C.S0023 Sec. 3.4.8.
+   */
+  readCDMAHome: function readCDMAHome() {
+    function callback(options) {
+      let strLen = Buf.readUint32();
+      let tempOctet = GsmPDUHelper.readHexOctet();
+      cdmaHomeSystemId.push(((GsmPDUHelper.readHexOctet() & 0x7f) << 8) | tempOctet);
+      tempOctet = GsmPDUHelper.readHexOctet();
+      cdmaHomeNetworkId.push(((GsmPDUHelper.readHexOctet() & 0xff) << 8) | tempOctet);
+
+      // Consuming the last octet: band class.
+      Buf.seekIncoming(PDU_HEX_OCTET_SIZE);
+
+      Buf.readStringDelimiter(strLen);
+      if (options.p1 < options.totalRecords) {
+        ICCIOHelper.loadNextRecord(options);
+      } else {
+        if (DEBUG) {
+          debug("CDMAHome system id: " + JSON.stringify(cdmaHomeSystemId));
+          debug("CDMAHome network id: " + JSON.stringify(cdmaHomeNetworkId));
+        }
+        RIL.cdmaHome = {
+          systemId: cdmaHomeSystemId,
+          networkId: cdmaHomeNetworkId
+        };
+      }
+    }
+
+    let cdmaHomeSystemId = [], cdmaHomeNetworkId = [];
+    ICCIOHelper.loadLinearFixedEF({fileId: ICC_EF_CSIM_CDMAHOME,
+                                   callback: callback.bind(this)});
+  },
+
+  /**
+   * Read CDMA Service Table.
+   * See 3GPP2 C.S0023 Sec. 3.4.18
+   */
+  readCST: function readCST() {
+    function callback() {
+      let strLen = Buf.readUint32();
+      // Each octet is encoded into two chars.
+      RIL.iccInfoPrivate.cst = GsmPDUHelper.readHexOctetArray(strLen / 2);
+      Buf.readStringDelimiter(strLen);
+
+      if (DEBUG) {
+        let str = "";
+        for (let i = 0; i < RIL.iccInfoPrivate.cst.length; i++) {
+          str += RIL.iccInfoPrivate.cst[i] + ", ";
+        }
+        debug("CST: " + str);
+      }
+    }
+    ICCIOHelper.loadTransparentEF({fileId: ICC_EF_CSIM_CST,
+                                   callback: callback.bind(this)});
+  }
+};
+
 /**
  * Global stuff.
  */