diff --git a/api/current.txt b/api/current.txt
index c544470..894e6a1 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -40727,11 +40727,12 @@
     method public java.lang.String iccTransmitApduBasicChannel(int, int, int, int, int, java.lang.String);
     method public java.lang.String iccTransmitApduLogicalChannel(int, int, int, int, int, int, java.lang.String);
     method public boolean isConcurrentVoiceAndDataSupported();
-    method public boolean isDataEnabled();
+    method public deprecated boolean isDataEnabled();
     method public boolean isHearingAidCompatibilitySupported();
     method public boolean isNetworkRoaming();
     method public boolean isSmsCapable();
     method public deprecated boolean isTtyModeSupported();
+    method public boolean isUserMobileDataEnabled();
     method public boolean isVoiceCapable();
     method public boolean isVoicemailVibrationEnabled(android.telecom.PhoneAccountHandle);
     method public boolean isWorldPhone();
@@ -40741,12 +40742,13 @@
     method public java.lang.String sendEnvelopeWithStatus(java.lang.String);
     method public void sendUssdRequest(java.lang.String, android.telephony.TelephonyManager.UssdResponseCallback, android.os.Handler);
     method public void sendVisualVoicemailSms(java.lang.String, int, java.lang.String, android.app.PendingIntent);
-    method public void setDataEnabled(boolean);
+    method public deprecated void setDataEnabled(boolean);
     method public boolean setLine1NumberForDisplay(java.lang.String, java.lang.String);
     method public void setNetworkSelectionModeAutomatic();
     method public boolean setNetworkSelectionModeManual(java.lang.String, boolean);
     method public boolean setOperatorBrandOverride(java.lang.String);
     method public boolean setPreferredNetworkTypeToGlobal();
+    method public void setUserMobileDataEnabled(boolean);
     method public void setVisualVoicemailSmsFilterSettings(android.telephony.VisualVoicemailSmsFilterSettings);
     method public boolean setVoiceMailNumber(java.lang.String, java.lang.String);
     method public deprecated void setVoicemailRingtoneUri(android.telecom.PhoneAccountHandle, android.net.Uri);
diff --git a/api/system-current.txt b/api/system-current.txt
index 6ee98a7..2a757efe 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -4039,7 +4039,7 @@
     method public deprecated boolean isVisualVoicemailEnabled(android.telecom.PhoneAccountHandle);
     method public boolean needsOtaServiceProvisioning();
     method public int setAllowedCarriers(int, java.util.List<android.service.carrier.CarrierIdentifier>);
-    method public void setDataEnabled(int, boolean);
+    method public deprecated void setDataEnabled(int, boolean);
     method public boolean setRadio(boolean);
     method public boolean setRadioPower(boolean);
     method public deprecated void setVisualVoicemailEnabled(android.telecom.PhoneAccountHandle, boolean);
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 8071e8b..11d338d 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -1794,7 +1794,7 @@
                 ITelephony it = ITelephony.Stub.asInterface(b);
                 int subId = SubscriptionManager.getDefaultDataSubscriptionId();
                 Log.d("ConnectivityManager", "getMobileDataEnabled()+ subId=" + subId);
-                boolean retVal = it.getDataEnabled(subId);
+                boolean retVal = it.isUserDataEnabled(subId);
                 Log.d("ConnectivityManager", "getMobileDataEnabled()- subId=" + subId
                         + " retVal=" + retVal);
                 return retVal;
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 7245dac..f278d7c 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -5676,39 +5676,38 @@
      * @param enable Whether to enable mobile data.
      *
      * @see #hasCarrierPrivileges
+     * @deprecated use {@link #setUserMobileDataEnabled(boolean)} instead.
      */
+    @Deprecated
     @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
     public void setDataEnabled(boolean enable) {
-        setDataEnabled(getSubId(SubscriptionManager.getDefaultDataSubscriptionId()), enable);
+        setUserMobileDataEnabled(enable);
     }
 
-    /** @hide */
-    @SystemApi
-    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
-    public void setDataEnabled(int subId, boolean enable) {
-        try {
-            Log.d(TAG, "setDataEnabled: enabled=" + enable);
-            ITelephony telephony = getITelephony();
-            if (telephony != null)
-                telephony.setDataEnabled(subId, enable);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Error calling ITelephony#setDataEnabled", e);
-        }
-    }
-
-
     /**
-     * @deprecated use {@link #isDataEnabled()} instead.
+     * @hide
+     * @deprecated use {@link #setUserMobileDataEnabled(boolean)} instead.
+    */
+    @SystemApi
+    @Deprecated
+    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
+    public void setDataEnabled(int subId, boolean enable) {
+        setUserMobileDataEnabled(subId, enable);
+    }
+
+    /**
+     * @deprecated use {@link #isUserMobileDataEnabled()} instead.
      * @hide
      */
     @SystemApi
     @Deprecated
     public boolean getDataEnabled() {
-        return isDataEnabled();
+        return isUserMobileDataEnabled();
     }
 
     /**
-     * Returns whether mobile data is enabled or not.
+     * Returns whether mobile data is enabled or not per user setting. There are other factors
+     * that could disable mobile data, but they are not considered here.
      *
      * If this object has been created with {@link #createForSubscriptionId}, applies to the given
      * subId. Otherwise, applies to {@link SubscriptionManager#getDefaultDataSubscriptionId()}
@@ -5725,28 +5724,21 @@
      * @return true if mobile data is enabled.
      *
      * @see #hasCarrierPrivileges
+     * @deprecated use {@link #isUserMobileDataEnabled()} instead.
      */
-    @SuppressWarnings("deprecation")
+    @Deprecated
     public boolean isDataEnabled() {
-        return getDataEnabled(getSubId(SubscriptionManager.getDefaultDataSubscriptionId()));
+        return isUserMobileDataEnabled();
     }
 
     /**
-     * @deprecated use {@link #isDataEnabled(int)} instead.
+     * @deprecated use {@link #isUserMobileDataEnabled()} instead.
      * @hide
      */
+    @Deprecated
     @SystemApi
     public boolean getDataEnabled(int subId) {
-        boolean retVal = false;
-        try {
-            ITelephony telephony = getITelephony();
-            if (telephony != null)
-                retVal = telephony.getDataEnabled(subId);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Error calling ITelephony#getDataEnabled", e);
-        } catch (NullPointerException e) {
-        }
-        return retVal;
+        return isUserMobileDataEnabled(subId);
     }
 
     /** @hide */
@@ -6898,4 +6890,101 @@
         }
         return null;
     }
+
+    /**
+     * Turns mobile data on or off.
+     * If the {@link TelephonyManager} object has been created with
+     * {@link #createForSubscriptionId}, this API applies to the given subId.
+     * Otherwise, it applies to {@link SubscriptionManager#getDefaultDataSubscriptionId()}
+     *
+     * <p>Requires Permission:
+     *     {@link android.Manifest.permission#MODIFY_PHONE_STATE MODIFY_PHONE_STATE} or that the
+     *     calling app has carrier privileges.
+     *
+     * @param enable Whether to enable mobile data.
+     *
+     * @see #hasCarrierPrivileges
+     */
+    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
+    public void setUserMobileDataEnabled(boolean enable) {
+        setUserMobileDataEnabled(
+                getSubId(SubscriptionManager.getDefaultDataSubscriptionId()), enable);
+    }
+
+    /**
+     * Returns whether mobile data is enabled or not per user setting. There are other factors
+     * that could disable mobile data, but they are not considered here.
+     *
+     * If this object has been created with {@link #createForSubscriptionId}, applies to the given
+     * subId. Otherwise, applies to {@link SubscriptionManager#getDefaultDataSubscriptionId()}
+     *
+     * <p>Requires one of the following permissions:
+     * {@link android.Manifest.permission#ACCESS_NETWORK_STATE ACCESS_NETWORK_STATE},
+     * {@link android.Manifest.permission#MODIFY_PHONE_STATE MODIFY_PHONE_STATE}, or that the
+     * calling app has carrier privileges.
+     *
+     * <p>Note that this does not take into account any data restrictions that may be present on the
+     * calling app. Such restrictions may be inspected with
+     * {@link ConnectivityManager#getRestrictBackgroundStatus}.
+     *
+     * @return true if mobile data is enabled.
+     *
+     * @see #hasCarrierPrivileges
+     */
+    @RequiresPermission(anyOf = {
+            android.Manifest.permission.ACCESS_NETWORK_STATE,
+            android.Manifest.permission.MODIFY_PHONE_STATE
+    })
+    public boolean isUserMobileDataEnabled() {
+        return isUserMobileDataEnabled(
+                getSubId(SubscriptionManager.getDefaultDataSubscriptionId()));
+    }
+
+    /**
+     * @hide
+     * Unlike isUserMobileDataEnabled, this API also evaluates carrierDataEnabled,
+     * policyDataEnabled etc to give a final decision.
+     */
+    public boolean isMobileDataEnabled() {
+        boolean retVal = false;
+        try {
+            int subId = getSubId(SubscriptionManager.getDefaultDataSubscriptionId());
+            ITelephony telephony = getITelephony();
+            if (telephony != null)
+                retVal = telephony.isDataEnabled(subId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#isDataEnabled", e);
+        } catch (NullPointerException e) {
+        }
+        return retVal;
+    }
+
+    /**
+     * Utility class of {@link #isUserMobileDataEnabled()};
+     */
+    private boolean isUserMobileDataEnabled(int subId) {
+        boolean retVal = false;
+        try {
+            ITelephony telephony = getITelephony();
+            if (telephony != null)
+                retVal = telephony.isUserDataEnabled(subId);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#isUserDataEnabled", e);
+        } catch (NullPointerException e) {
+        }
+        return retVal;
+    }
+
+    /** Utility method of {@link #setUserMobileDataEnabled(boolean)} */
+    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
+    private void setUserMobileDataEnabled(int subId, boolean enable) {
+        try {
+            Log.d(TAG, "setUserMobileDataEnabled: enabled=" + enable);
+            ITelephony telephony = getITelephony();
+            if (telephony != null)
+                telephony.setUserDataEnabled(subId, enable);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#setUserDataEnabled", e);
+        }
+    }
 }
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 64083e3..b0af9a8 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -870,14 +870,33 @@
      *
      * @param enable true to turn on, else false
      */
-    void setDataEnabled(int subId, boolean enable);
+    void setUserDataEnabled(int subId, boolean enable);
+
+    /**
+     * Get the user enabled state of Mobile Data.
+     *
+     * TODO: remove and use isUserDataEnabled.
+     * This can't be removed now because some vendor codes
+     * calls through ITelephony directly while they should
+     * use TelephonyManager.
+     *
+     * @return true on enabled
+     */
+    boolean getDataEnabled(int subId);
 
     /**
      * Get the user enabled state of Mobile Data.
      *
      * @return true on enabled
      */
-    boolean getDataEnabled(int subId);
+    boolean isUserDataEnabled(int subId);
+
+    /**
+     * Get the overall enabled state of Mobile Data.
+     *
+     * @return true on enabled
+     */
+    boolean isDataEnabled(int subId);
 
     /**
      * Get P-CSCF address from PCO after data connection is established or modified.