diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 4930255734b51..e4885a112f8e0 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -2755,6 +2755,25 @@ public class TelephonyManager {
         }
     }
 
+    /**
+     * Get the calculated preferred network type.
+     * Used for debugging incorrect network type.
+     *
+     * @return the preferred network type, defined in RILConstants.java or -1 if
+     *         none available.
+     * @hide
+     */
+    public int getCalculatedPreferredNetworkType() {
+        try {
+            return getITelephony().getCalculatedPreferredNetworkType();
+        } catch (RemoteException ex) {
+            Rlog.e(TAG, "getCalculatedPreferredNetworkType RemoteException", ex);
+        } catch (NullPointerException ex) {
+            Rlog.e(TAG, "getCalculatedPreferredNetworkType NPE", ex);
+        }
+        return -1;
+    }
+
     /**
      * Get the preferred network type.
      * Used for device configuration by some CDMA operators.
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 5b6db4d1b8821..7bf3b3fd97b32 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -583,6 +583,14 @@ interface ITelephony {
      */
     boolean nvResetConfig(int resetType);
 
+    /*
+     * Get the calculated preferred network type.
+     * Used for device configuration by some CDMA operators.
+     *
+     * @return the calculated preferred network type, defined in RILConstants.java.
+     */
+    int getCalculatedPreferredNetworkType();
+
     /*
      * Get the preferred network type.
      * Used for device configuration by some CDMA operators.