diff --git a/dom/network/interfaces/nsIDOMMobileConnection.idl b/dom/network/interfaces/nsIDOMMobileConnection.idl
index 6c5a4732b2b7..12bd76d6fa0e 100644
--- a/dom/network/interfaces/nsIDOMMobileConnection.idl
+++ b/dom/network/interfaces/nsIDOMMobileConnection.idl
@@ -119,7 +119,12 @@ interface nsIDOMMozMobileConnection : nsIDOMEventTarget
    *   unlockCardLock({lockType: "pin",
    *                   pin: "..."});
    *
-   * (2) Unlocking the PUK and supplying a new PIN:
+   * (2) Network depersonalization. Unlocking the network control key (NCK).
+   *
+   *   unlockCardLock({lockType: "nck",
+   *                   pin: "..."});
+   *
+   * (3) Unlocking the PUK and supplying a new PIN:
    *
    *   unlockCardLock({lockType: "puk",
    *                   puk: "...",
diff --git a/dom/system/gonk/ril_consts.js b/dom/system/gonk/ril_consts.js
index 2ec8b92fc178..01b749b6c1eb 100644
--- a/dom/system/gonk/ril_consts.js
+++ b/dom/system/gonk/ril_consts.js
@@ -28,7 +28,7 @@ const REQUEST_ENTER_SIM_PIN2 = 4;
 const REQUEST_ENTER_SIM_PUK2 = 5;
 const REQUEST_CHANGE_SIM_PIN = 6;
 const REQUEST_CHANGE_SIM_PIN2 = 7;
-const REQUEST_ENTER_NETWORK_DEPERSONALIZATION = 8;
+const REQUEST_ENTER_NETWORK_DEPERSONALIZATION_CODE = 8;
 const REQUEST_GET_CURRENT_CALLS = 9;
 const REQUEST_DIAL = 10;
 const REQUEST_GET_IMSI = 11;
diff --git a/dom/system/gonk/ril_worker.js b/dom/system/gonk/ril_worker.js
index c84728fcd94d..c8323b7c6103 100644
--- a/dom/system/gonk/ril_worker.js
+++ b/dom/system/gonk/ril_worker.js
@@ -812,6 +812,10 @@ let RIL = {
       case "puk2":
         this.enterICCPUK2(options);
         break;
+      case "nck":
+        options.type = CARD_PERSOSUBSTATE_SIM_NETWORK;
+        this.enterDepersonalization(options);
+        break;
       default:
         options.errorMsg = "Unsupported Card Lock.";
         options.success = false;
@@ -855,6 +859,21 @@ let RIL = {
     Buf.sendParcel();
   },
 
+  /**
+   * Requests a network personalization be deactivated.
+   *
+   * @param type
+   *        Integer indicating the network personalization be deactivated.
+   * @param pin
+   *        String containing the pin.
+   */
+  enterDepersonalization: function enterDepersonalization(options) {
+    Buf.newParcel(REQUEST_ENTER_NETWORK_DEPERSONALIZATION_CODE, options);
+    Buf.writeUint32(options.type);
+    Buf.writeString(options.pin);
+    Buf.sendParcel();
+  },
+
    /**
    * Helper function for changing ICC locks.
    */
@@ -3699,7 +3718,10 @@ RIL[REQUEST_CHANGE_SIM_PIN] = function REQUEST_CHANGE_SIM_PIN(length, options) {
 RIL[REQUEST_CHANGE_SIM_PIN2] = function REQUEST_CHANGE_SIM_PIN2(length, options) {
   this._processEnterAndChangeICCResponses(length, options);
 };
-RIL[REQUEST_ENTER_NETWORK_DEPERSONALIZATION] = null;
+RIL[REQUEST_ENTER_NETWORK_DEPERSONALIZATION_CODE] =
+  function REQUEST_ENTER_NETWORK_DEPERSONALIZATION_CODE(length, options) {
+  this._processEnterAndChangeICCResponses(length, options);
+};
 RIL[REQUEST_GET_CURRENT_CALLS] = function REQUEST_GET_CURRENT_CALLS(length, options) {
   if (options.rilRequestError) {
     return;