diff --git a/res/xml/development_settings.xml b/res/xml/development_settings.xml
index 9857280ecf4..2c943410cdc 100644
--- a/res/xml/development_settings.xml
+++ b/res/xml/development_settings.xml
@@ -276,14 +276,6 @@
             android:entries="@array/bluetooth_a2dp_codec_ldac_playback_quality_titles"
             android:entryValues="@array/bluetooth_a2dp_codec_ldac_playback_quality_values" />
 
-        <com.android.settings.development.PrivateDnsModeDialogPreference
-            android:key="select_private_dns_configuration"
-            android:title="@string/select_private_dns_configuration_title"
-            android:dialogTitle="@string/select_private_dns_configuration_dialog_title"
-            android:dialogLayout="@layout/private_dns_mode_dialog"
-            android:positiveButtonText="@string/save"
-            android:negativeButtonText="@string/cancel" />
-
     </PreferenceCategory>
 
     <PreferenceCategory android:key="debug_input_category"
diff --git a/src/com/android/settings/development/DevelopmentSettings.java b/src/com/android/settings/development/DevelopmentSettings.java
index 474502378dc..1a43808d1fe 100644
--- a/src/com/android/settings/development/DevelopmentSettings.java
+++ b/src/com/android/settings/development/DevelopmentSettings.java
@@ -193,8 +193,6 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
     private static final String BLUETOOTH_SELECT_A2DP_CHANNEL_MODE_KEY = "bluetooth_select_a2dp_channel_mode";
     private static final String BLUETOOTH_SELECT_A2DP_LDAC_PLAYBACK_QUALITY_KEY = "bluetooth_select_a2dp_ldac_playback_quality";
 
-    private static final String PRIVATE_DNS_PREF_KEY = "select_private_dns_configuration";
-
     private static final String INACTIVE_APPS_KEY = "inactive_apps";
 
     private static final String IMMEDIATELY_DESTROY_ACTIVITIES_KEY
@@ -490,8 +488,6 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         mBluetoothSelectA2dpLdacPlaybackQuality = addListPreference(BLUETOOTH_SELECT_A2DP_LDAC_PLAYBACK_QUALITY_KEY);
         initBluetoothConfigurationValues();
 
-        updatePrivateDnsSummary();
-
         mWindowAnimationScale = addListPreference(WINDOW_ANIMATION_SCALE_KEY);
         mTransitionAnimationScale = addListPreference(TRANSITION_ANIMATION_SCALE_KEY);
         mAnimatorDurationScale = addListPreference(ANIMATOR_DURATION_SCALE_KEY);
@@ -847,7 +843,6 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         updateBluetoothDisableAbsVolumeOptions();
         updateBluetoothEnableInbandRingingOptions();
         updateBluetoothA2dpConfigurationValues();
-        updatePrivateDnsSummary();
     }
 
     private void resetDangerousOptions() {
@@ -2012,13 +2007,6 @@ public class DevelopmentSettings extends RestrictedSettingsFragment
         }
     }
 
-    private void updatePrivateDnsSummary() {
-        final String summary = PrivateDnsModeDialogPreference.getSummaryStringForModeFromSettings(
-                getActivity().getContentResolver(), getActivity().getResources());
-        final Preference pref = findPreference(PRIVATE_DNS_PREF_KEY);
-        pref.setSummary(summary);
-    }
-
     private void writeImmediatelyDestroyActivitiesOptions() {
         try {
             ActivityManager.getService().setAlwaysFinish(
diff --git a/src/com/android/settings/development/PrivateDnsModeDialogPreference.java b/src/com/android/settings/development/PrivateDnsModeDialogPreference.java
deleted file mode 100644
index ee44b08b75d..00000000000
--- a/src/com/android/settings/development/PrivateDnsModeDialogPreference.java
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.android.settings.development;
-
-import static android.net.ConnectivityManager.PRIVATE_DNS_DEFAULT_MODE;
-import static android.net.ConnectivityManager.PRIVATE_DNS_MODE_OFF;
-import static android.net.ConnectivityManager.PRIVATE_DNS_MODE_OPPORTUNISTIC;
-import static android.net.ConnectivityManager.PRIVATE_DNS_MODE_PROVIDER_HOSTNAME;
-
-import android.app.AlertDialog;
-import android.app.Dialog;
-import android.content.ContentResolver;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.res.Resources;
-import android.os.Bundle;
-import android.provider.Settings;
-import android.support.v14.preference.PreferenceDialogFragment;
-import android.support.v7.preference.DialogPreference;
-import android.text.Editable;
-import android.text.TextUtils;
-import android.text.TextWatcher;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.inputmethod.EditorInfo;
-import android.view.KeyEvent;
-import android.view.View;
-import android.view.ViewGroup.LayoutParams;
-import android.view.ViewGroup.MarginLayoutParams;
-import android.widget.CompoundButton;
-import android.widget.CompoundButton.OnCheckedChangeListener;
-import android.widget.EditText;
-import android.widget.RadioButton;
-import android.widget.TextView;
-import android.widget.TextView.OnEditorActionListener;
-
-import com.android.settings.R;
-import com.android.settingslib.CustomDialogPreference;
-
-
-public class PrivateDnsModeDialogPreference extends CustomDialogPreference
-        implements OnCheckedChangeListener, TextWatcher, OnEditorActionListener {
-    private static final String TAG = PrivateDnsModeDialogPreference.class.getSimpleName();
-
-    private static final String MODE_KEY = Settings.Global.PRIVATE_DNS_MODE;
-    private static final String HOSTNAME_KEY = Settings.Global.PRIVATE_DNS_SPECIFIER;
-    private String mMode;
-    private EditText mEditText;
-
-    public static String getSummaryStringForModeFromSettings(ContentResolver cr, Resources res) {
-        final String mode = getModeFromSettings(cr);
-        switch (mode) {
-            case PRIVATE_DNS_MODE_OFF:
-                return res.getString(R.string.private_dns_mode_off);
-            case PRIVATE_DNS_MODE_OPPORTUNISTIC:
-                return res.getString(R.string.private_dns_mode_opportunistic);
-            case PRIVATE_DNS_MODE_PROVIDER_HOSTNAME:
-                return getHostnameFromSettings(cr);
-            default:
-                return "unknown";
-        }
-    }
-
-    public PrivateDnsModeDialogPreference(Context context, AttributeSet attrs, int defStyleAttr,
-            int defStyleRes) {
-        super(context, attrs, defStyleAttr, defStyleRes);
-    }
-
-    public PrivateDnsModeDialogPreference(Context context, AttributeSet attrs, int defStyleAttr) {
-        super(context, attrs, defStyleAttr);
-    }
-
-    public PrivateDnsModeDialogPreference(Context context, AttributeSet attrs) {
-        super(context, attrs);
-    }
-
-    public PrivateDnsModeDialogPreference(Context context) {
-        super(context);
-    }
-
-    // This is called first when the dialog is launched.
-    @Override
-    protected void onBindDialogView(View view) {
-        final String mode = getModeFromSettings();
-
-        RadioButton rb = (RadioButton) view.findViewById(R.id.private_dns_mode_off);
-        if (mode.equals(PRIVATE_DNS_MODE_OFF)) rb.setChecked(true);
-        rb.setOnCheckedChangeListener(this);
-
-        rb = (RadioButton) view.findViewById(R.id.private_dns_mode_opportunistic);
-        if (mode.equals(PRIVATE_DNS_MODE_OPPORTUNISTIC)) rb.setChecked(true);
-        rb.setOnCheckedChangeListener(this);
-
-        rb = (RadioButton) view.findViewById(R.id.private_dns_mode_provider);
-        if (mode.equals(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME)) rb.setChecked(true);
-        rb.setOnCheckedChangeListener(this);
-
-        mEditText = (EditText) view.findViewById(R.id.private_dns_mode_provider_hostname);
-        mEditText.setOnEditorActionListener(this);
-        mEditText.addTextChangedListener(this);
-
-        // (Mostly) Fix the EditText field's indentation to align underneath the
-        // displayed radio button text, and not under the radio button itself.
-        final int padding = rb.isLayoutRtl()
-                ? rb.getCompoundPaddingRight()
-                : rb.getCompoundPaddingLeft();
-        final MarginLayoutParams marginParams = (MarginLayoutParams) mEditText.getLayoutParams();
-        marginParams.setMarginStart(marginParams.getMarginStart() + padding);
-        mEditText.setLayoutParams(marginParams);
-        mEditText.setText(getHostnameFromSettings());
-
-        setDialogValue(mode);
-    }
-
-    @Override
-    protected void onDialogClosed(boolean positiveResult) {
-        if (!positiveResult) return;
-
-        saveDialogValue();
-        setSummary(getSummaryStringForModeFromSettings(
-                getContext().getContentResolver(), getContext().getResources()));
-    }
-
-    @Override
-    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
-        if (!isChecked) return;
-
-        switch (buttonView.getId()) {
-            case R.id.private_dns_mode_off:
-                setDialogValue(PRIVATE_DNS_MODE_OFF);
-                break;
-            case R.id.private_dns_mode_opportunistic:
-                setDialogValue(PRIVATE_DNS_MODE_OPPORTUNISTIC);
-                break;
-            case R.id.private_dns_mode_provider:
-                setDialogValue(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME);
-                break;
-            default:
-                // Unknown button; ignored.
-                break;
-        }
-    }
-
-    @Override
-    public boolean onEditorAction(TextView tv, int actionId, KeyEvent k) {
-        if (actionId == EditorInfo.IME_ACTION_DONE) {
-            saveDialogValue();
-            getDialog().dismiss();
-            return true;
-        }
-        return false;
-    }
-
-    @Override
-    public void beforeTextChanged(CharSequence s, int start, int count, int after) { return; }
-
-    @Override
-    public void onTextChanged(CharSequence s, int start, int before, int count) { return; }
-
-    @Override
-    public void afterTextChanged(Editable s) {
-        final String hostname = s.toString();
-        final boolean appearsValid = isWeaklyValidatedHostname(hostname);
-        // TODO: Disable the "positive button" ("Save") when appearsValid is false.
-    }
-
-    private void setDialogValue(String mode) {
-        mMode = mode;
-        final boolean txtEnabled = mMode.equals(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME);
-        mEditText.setEnabled(txtEnabled);
-    }
-
-    private void saveDialogValue() {
-        if (!isValidMode(mMode)) {
-            mMode = PRIVATE_DNS_DEFAULT_MODE;
-        }
-
-        if (mMode.equals(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME)) {
-            final String hostname = mEditText.getText().toString();
-            if (isWeaklyValidatedHostname(hostname)) {
-                saveHostnameToSettings(hostname);
-            } else {
-                // TODO: Once quasi-validation of hostnames works and acceptable
-                // user signaling is working, this can be deleted.
-                mMode = PRIVATE_DNS_MODE_OPPORTUNISTIC;
-                if (TextUtils.isEmpty(hostname)) saveHostnameToSettings("");
-            }
-        }
-
-        saveModeToSettings(mMode);
-    }
-
-    private String getModeFromSettings() {
-        return getModeFromSettings(getContext().getContentResolver());
-    }
-
-    private void saveModeToSettings(String value) {
-        Settings.Global.putString(getContext().getContentResolver(), MODE_KEY, value);
-    }
-
-    private String getHostnameFromSettings() {
-        return getHostnameFromSettings(getContext().getContentResolver());
-    }
-
-    private void saveHostnameToSettings(String hostname) {
-        Settings.Global.putString(getContext().getContentResolver(), HOSTNAME_KEY, hostname);
-    }
-
-    private static String getModeFromSettings(ContentResolver cr) {
-        final String mode = Settings.Global.getString(cr, MODE_KEY);
-        return isValidMode(mode) ? mode : PRIVATE_DNS_DEFAULT_MODE;
-    }
-
-    private static boolean isValidMode(String mode) {
-        return !TextUtils.isEmpty(mode) && (
-                mode.equals(PRIVATE_DNS_MODE_OFF) ||
-                mode.equals(PRIVATE_DNS_MODE_OPPORTUNISTIC) ||
-                mode.equals(PRIVATE_DNS_MODE_PROVIDER_HOSTNAME));
-    }
-
-    private static String getHostnameFromSettings(ContentResolver cr) {
-        return Settings.Global.getString(cr, HOSTNAME_KEY);
-    }
-
-    private static boolean isWeaklyValidatedHostname(String hostname) {
-        // TODO: Find and use a better validation method.  Specifically:
-        //     [1] this should reject IP string literals, and
-        //     [2] do the best, simplest, future-proof verification that
-        //         the input approximates a DNS hostname.
-        final String WEAK_HOSTNAME_REGEX = "^[a-zA-Z0-9_.-]+$";
-        return hostname.matches(WEAK_HOSTNAME_REGEX);
-    }
-}