diff --git a/res/layout/radio_info.xml b/res/layout/radio_info.xml
index 1f137b0..6d1439e 100644
--- a/res/layout/radio_info.xml
+++ b/res/layout/radio_info.xml
@@ -258,6 +258,14 @@
                 android:layout_height="wrap_content"
                 android:text="@string/dsds_switch_string" />
 
+        <!-- Set removable eSIM as default eUICC. -->
+        <Switch android:id="@+id/removable_esim_switch"
+                android:textSize="14sp"
+                android:layout_marginTop="8dip"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/removable_esim_string" />
+
         <!-- Horizontal Rule -->
         <View
             android:layout_width="fill_parent"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index c17f9b9..38a86f9 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2004,6 +2004,9 @@
     <!-- UI debug setting: Enable/Disable DSDS [CHAR LIMIT=none] -->
     <string name="dsds_dialog_cancel">Cancel</string>
 
+    <!-- Setting Removable esim as default. Only shown in diagnostic screen, so precise translation is not needed -->
+    <string name="removable_esim_string">Set Removable eSIM as Default</string>
+
     <!-- Title for controlling on/off for Mobile phone's radio power. Only shown in diagnostic screen, so precise translation is not needed. -->
     <string name="radio_info_radio_power">Mobile Radio Power</string>
 
diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index a5168ef..66cef64 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -11302,4 +11302,42 @@
             Binder.restoreCallingIdentity(identity);
         }
     }
+
+    /**
+     * set removable eSIM as default eUICC.
+     *
+     * @hide
+     */
+    @Override
+    public void setRemovableEsimAsDefaultEuicc(boolean isDefault, String callingPackage) {
+        enforceModifyPermission();
+        mAppOps.checkPackage(Binder.getCallingUid(), callingPackage);
+
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            UiccController.getInstance().setRemovableEsimAsDefaultEuicc(isDefault);
+        }  finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+    /**
+     * Returns whether the removable eSIM is default eUICC or not.
+     *
+     * @hide
+     */
+    @Override
+    public boolean isRemovableEsimDefaultEuicc(String callingPackage) {
+        enforceReadPrivilegedPermission("isRemovableEsimDefaultEuicc");
+        mAppOps.checkPackage(Binder.getCallingUid(), callingPackage);
+
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            return UiccController.getInstance().isRemovableEsimDefaultEuicc();
+        }  finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
+
+
 }
diff --git a/src/com/android/phone/settings/RadioInfo.java b/src/com/android/phone/settings/RadioInfo.java
index f6fe33e..ef31298 100644
--- a/src/com/android/phone/settings/RadioInfo.java
+++ b/src/com/android/phone/settings/RadioInfo.java
@@ -24,6 +24,7 @@
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.pm.ComponentInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
@@ -96,6 +97,7 @@
 import com.android.ims.ImsManager;
 import com.android.internal.telephony.Phone;
 import com.android.internal.telephony.PhoneFactory;
+import com.android.internal.telephony.euicc.EuiccConnector;
 import com.android.phone.R;
 
 import java.io.IOException;
@@ -225,6 +227,9 @@
     private static final String TRIGGER_CARRIER_PROVISIONING_ACTION =
             "com.android.phone.settings.TRIGGER_CARRIER_PROVISIONING";
 
+    private static final String ACTION_REMOVABLE_ESIM_AS_DEFAULT =
+            "android.telephony.euicc.action.REMOVABLE_ESIM_AS_DEFAULT";
+
     private TextView mDeviceId; //DeviceId is the IMEI in GSM and the MEID in CDMA
     private TextView mLine1Number;
     private TextView mSubscriptionId;
@@ -273,6 +278,7 @@
     private Switch mEabProvisionedSwitch;
     private Switch mCbrsDataSwitch;
     private Switch mDsdsSwitch;
+    private Switch mRemovableEsimSwitch;
     private Spinner mPreferredNetworkType;
     private Spinner mSelectPhoneIndex;
     private Spinner mCellInfoRefreshRateSpinner;
@@ -573,6 +579,13 @@
             mDsdsSwitch.setVisibility(View.GONE);
         }
 
+        mRemovableEsimSwitch = (Switch) findViewById(R.id.removable_esim_switch);
+        mRemovableEsimSwitch.setEnabled(!IS_USER_BUILD && isDsdsEnabled());
+        if (!IS_USER_BUILD) {
+            mRemovableEsimSwitch.setChecked(mTelephonyManager.isRemovableEsimDefaultEuicc());
+            mRemovableEsimSwitch.setOnCheckedChangeListener(mRemovableEsimChangeListener);
+        }
+
         mRadioPowerOnSwitch = (Switch) findViewById(R.id.radio_power);
 
         mDownlinkKbps = (TextView) findViewById(R.id.dl_kbps);
@@ -1857,6 +1870,9 @@
 
     private void performDsdsSwitch() {
         mTelephonyManager.switchMultiSimConfig(mDsdsSwitch.isChecked() ? 2 : 1);
+        if (!IS_USER_BUILD) {
+            mRemovableEsimSwitch.setEnabled(mDsdsSwitch.isChecked());
+        }
     }
 
     /**
@@ -1877,4 +1893,27 @@
             }
         }
     };
+
+    OnCheckedChangeListener mRemovableEsimChangeListener = new OnCheckedChangeListener() {
+        @Override
+        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+            setRemovableEsimAsDefaultEuicc(isChecked);
+        }
+    };
+
+    private void setRemovableEsimAsDefaultEuicc(boolean isChecked) {
+        Log.d(TAG, "setRemovableEsimAsDefaultEuicc isChecked: " + isChecked);
+        mTelephonyManager.setRemovableEsimAsDefaultEuicc(isChecked);
+        // TODO(b/232528117): Instead of sending intent, add new APIs in platform,
+        //  LPA can directly use the API.
+        ComponentInfo componentInfo = EuiccConnector.findBestComponent(getPackageManager());
+        if (componentInfo == null) {
+            Log.d(TAG, "setRemovableEsimAsDefaultEuicc: unable to find suitable component info");
+            return;
+        }
+        final Intent intent = new Intent(ACTION_REMOVABLE_ESIM_AS_DEFAULT);
+        intent.setPackage(componentInfo.packageName);
+        intent.putExtra("isDefault", isChecked);
+        sendBroadcast(intent);
+    }
 }