diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 0ff3e5d..c47a37d 100644
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -34,8 +34,10 @@
 import android.os.Binder;
 import android.os.Bundle;
 import android.os.Handler;
+import android.os.IBinder;
 import android.os.Looper;
 import android.os.Message;
+import android.os.Messenger;
 import android.os.Process;
 import android.os.ResultReceiver;
 import android.os.ServiceManager;
@@ -54,6 +56,7 @@
 import android.telephony.IccOpenLogicalChannelResponse;
 import android.telephony.ModemActivityInfo;
 import android.telephony.NeighboringCellInfo;
+import android.telephony.NetworkScanRequest;
 import android.telephony.RadioAccessFamily;
 import android.telephony.ServiceState;
 import android.telephony.SmsManager;
@@ -2641,6 +2644,27 @@
     }
 
     /**
+     * Performs a new network scan and returns the id of this scan.
+     *
+     * @return the id of the requested scan which can be used to stop the scan.
+     */
+    @Override
+    public int requestNetworkScan(int subId, NetworkScanRequest request, Messenger messenger,
+            IBinder binder) {
+        // TODO(yinxu): Implement this method.
+        throw new UnsupportedOperationException("To be implemented...");
+    }
+
+    /**
+     * Stops an existing network scan with the given scanId.
+     */
+    @Override
+    public void stopNetworkScan(int subId, int scanId) {
+        // TODO(yinxu): Implement this method.
+        throw new UnsupportedOperationException("To be implemented...");
+    }
+
+    /**
      * Get the calculated preferred network type.
      * Used for debugging incorrect network type.
      *
@@ -3695,14 +3719,17 @@
     }
 
     /**
-     * Set SIM card power state. Request is equivalent to inserting or removing the card.
+     * Set SIM card power state.
      *
      * @param slotIndex SIM slot id.
-     * @param powerUp True if powering up the SIM, otherwise powering down
+     * @param state  State of SIM (power down, power up, pass through)
+     * - {@link android.telephony.TelephonyManager#CARD_POWER_DOWN}
+     * - {@link android.telephony.TelephonyManager#CARD_POWER_UP}
+     * - {@link android.telephony.TelephonyManager#CARD_POWER_UP_PASS_THROUGH}
      *
      **/
     @Override
-    public void setSimPowerStateForSlot(int slotIndex, boolean powerUp) {
+    public void setSimPowerStateForSlot(int slotIndex, int state) {
         enforceModifyPermission();
         int subId[] = mSubscriptionController.getSubIdUsingSlotIndex(slotIndex);
         if (subId == null || subId.length == 0) {
@@ -3711,7 +3738,7 @@
 
         final Phone phone = getPhone(subId[0]);
         if (phone != null) {
-            phone.setSimPowerState(powerUp);
+            phone.setSimPowerState(state);
         }
     }