diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index 2a726c438..6c36b0e89 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -42,13 +42,11 @@
             android:title="@string/popup_on_keypress"
             android:persistent="true"
             android:defaultValue="@bool/config_default_key_preview_popup" />
-        <ListPreference
-            android:key="voice_mode"
+        <CheckBoxPreference
+            android:key="pref_voice_input_key"
             android:title="@string/voice_input"
             android:persistent="true"
-            android:entryValues="@array/voice_input_modes_values"
-            android:entries="@array/voice_input_modes"
-            android:defaultValue="@string/voice_mode_main" />
+            android:defaultValue="true" />
     </PreferenceCategory>
     <PreferenceCategory
         android:title="@string/correction_category"
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java b/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
index 711de63b3..1eccdf341 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardLayoutSet.java
@@ -106,6 +106,8 @@ public final class KeyboardLayoutSet {
         EditorInfo mEditorInfo;
         boolean mDisableTouchPositionCorrectionDataForTest;
         boolean mVoiceKeyEnabled;
+        // TODO: Remove mVoiceKeyOnMain when it's certainly confirmed that we no longer show
+        // the voice input key on the symbol layout
         boolean mVoiceKeyOnMain;
         boolean mNoSettingsKey;
         boolean mLanguageSwitchKeyEnabled;
@@ -259,6 +261,8 @@ public final class KeyboardLayoutSet {
             return this;
         }
 
+        // TODO: Remove mVoiceKeyOnMain when it's certainly confirmed that we no longer show
+        // the voice input key on the symbol layout
         public Builder setOptions(final boolean voiceKeyEnabled, final boolean voiceKeyOnMain,
                 final boolean languageSwitchKeyEnabled) {
             @SuppressWarnings("deprecation")
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java b/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
index 4569d31e3..d128d3595 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java
@@ -142,7 +142,7 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         builder.setSubtype(mSubtypeSwitcher.getCurrentSubtype());
         builder.setOptions(
                 settingsValues.isVoiceKeyEnabled(editorInfo),
-                settingsValues.isVoiceKeyOnMain(),
+                true /* always show a voice key on the main keyboard */,
                 settingsValues.isLanguageSwitchKeyEnabled());
         mKeyboardLayoutSet = builder.build();
         try {
diff --git a/java/src/com/android/inputmethod/latin/settings/Settings.java b/java/src/com/android/inputmethod/latin/settings/Settings.java
index fd83865ba..8732a59f8 100644
--- a/java/src/com/android/inputmethod/latin/settings/Settings.java
+++ b/java/src/com/android/inputmethod/latin/settings/Settings.java
@@ -44,7 +44,9 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
     public static final String PREF_VIBRATE_ON = "vibrate_on";
     public static final String PREF_SOUND_ON = "sound_on";
     public static final String PREF_POPUP_ON = "popup_on";
-    public static final String PREF_VOICE_MODE = "voice_mode";
+    // PREF_VOICE_MODE_OBSOLETE is obsolete. Use PREF_VOICE_INPUT_KEY instead.
+    public static final String PREF_VOICE_MODE_OBSOLETE = "voice_mode";
+    public static final String PREF_VOICE_INPUT_KEY = "pref_voice_input_key";
     public static final String PREF_CORRECTION_SETTINGS = "correction_settings";
     public static final String PREF_EDIT_PERSONAL_DICTIONARY = "edit_personal_dictionary";
     public static final String PREF_CONFIGURE_DICTIONARIES_KEY = "configure_dictionaries_key";
diff --git a/java/src/com/android/inputmethod/latin/settings/SettingsFragment.java b/java/src/com/android/inputmethod/latin/settings/SettingsFragment.java
index 1677e1828..cb7dda655 100644
--- a/java/src/com/android/inputmethod/latin/settings/SettingsFragment.java
+++ b/java/src/com/android/inputmethod/latin/settings/SettingsFragment.java
@@ -61,7 +61,7 @@ public final class SettingsFragment extends InputMethodSettingsFragment
             DBG_USE_INTERNAL_PERSONAL_DICTIONARY_SETTINGS
                     || Build.VERSION.SDK_INT <= 18 /* Build.VERSION.JELLY_BEAN_MR2 */;
 
-    private ListPreference mVoicePreference;
+    private CheckBoxPreference mVoiceInputKeyPreference;
     private ListPreference mShowCorrectionSuggestionsPreference;
     private ListPreference mAutoCorrectionThresholdPreference;
     private ListPreference mKeyPreviewPopupDismissDelay;
@@ -107,7 +107,8 @@ public final class SettingsFragment extends InputMethodSettingsFragment
         SubtypeLocaleUtils.init(context);
         AudioAndHapticFeedbackManager.init(context);
 
-        mVoicePreference = (ListPreference) findPreference(Settings.PREF_VOICE_MODE);
+        mVoiceInputKeyPreference =
+                (CheckBoxPreference) findPreference(Settings.PREF_VOICE_INPUT_KEY);
         mShowCorrectionSuggestionsPreference =
                 (ListPreference) findPreference(Settings.PREF_SHOW_SUGGESTIONS_SETTING);
         final SharedPreferences prefs = getPreferenceManager().getSharedPreferences();
@@ -166,7 +167,7 @@ public final class SettingsFragment extends InputMethodSettingsFragment
         final boolean showVoiceKeyOption = res.getBoolean(
                 R.bool.config_enable_show_voice_key_option);
         if (!showVoiceKeyOption) {
-            generalSettings.removePreference(mVoicePreference);
+            generalSettings.removePreference(mVoiceInputKeyPreference);
         }
 
         final PreferenceGroup advancedSettings =
@@ -243,10 +244,8 @@ public final class SettingsFragment extends InputMethodSettingsFragment
     public void onResume() {
         super.onResume();
         final boolean isShortcutImeEnabled = SubtypeSwitcher.getInstance().isShortcutImeEnabled();
-        if (isShortcutImeEnabled) {
-            updateVoiceModeSummary();
-        } else {
-            getPreferenceScreen().removePreference(mVoicePreference);
+        if (!isShortcutImeEnabled) {
+            getPreferenceScreen().removePreference(mVoiceInputKeyPreference);
         }
         final SharedPreferences prefs = getPreferenceManager().getSharedPreferences();
         final CheckBoxPreference showSetupWizardIcon =
@@ -287,7 +286,6 @@ public final class SettingsFragment extends InputMethodSettingsFragment
             LauncherIconVisibilityManager.updateSetupWizardIconVisibility(getActivity());
         }
         ensureConsistencyOfAutoCorrectionSettings();
-        updateVoiceModeSummary();
         updateShowCorrectionSuggestionsSummary();
         updateKeyPreviewPopupDelaySummary();
         refreshEnablingsOfKeypressSoundAndVibrationSettings(prefs, getResources());
@@ -330,12 +328,6 @@ public final class SettingsFragment extends InputMethodSettingsFragment
         lp.setSummary(entries[lp.findIndexOfValue(lp.getValue())]);
     }
 
-    private void updateVoiceModeSummary() {
-        mVoicePreference.setSummary(
-                getResources().getStringArray(R.array.voice_input_modes_summary)
-                        [mVoicePreference.findIndexOfValue(mVoicePreference.getValue())]);
-    }
-
     private void refreshEnablingsOfKeypressSoundAndVibrationSettings(
             final SharedPreferences sp, final Resources res) {
         setPreferenceEnabled(Settings.PREF_VIBRATION_DURATION_SETTINGS,
diff --git a/java/src/com/android/inputmethod/latin/settings/SettingsValues.java b/java/src/com/android/inputmethod/latin/settings/SettingsValues.java
index 32730d23f..072bb8731 100644
--- a/java/src/com/android/inputmethod/latin/settings/SettingsValues.java
+++ b/java/src/com/android/inputmethod/latin/settings/SettingsValues.java
@@ -64,7 +64,7 @@ public final class SettingsValues {
     public final boolean mVibrateOn;
     public final boolean mSoundOn;
     public final boolean mKeyPreviewPopupOn;
-    private final String mVoiceMode;
+    private final boolean mShowsVoiceInputKey;
     public final boolean mIncludesOtherImesInLanguageSwitchList;
     public final boolean mShowsLanguageSwitchKey;
     public final boolean mUseContactsDict;
@@ -90,8 +90,6 @@ public final class SettingsValues {
     public final float mAutoCorrectionThreshold;
     public final boolean mCorrectionEnabled;
     public final int mSuggestionVisibility;
-    private final boolean mVoiceKeyEnabled;
-    private final boolean mVoiceKeyOnMain;
     public final boolean mBoostPersonalizationDictionaryForDebug;
     public final boolean mUseOnlyPersonalizationDictionaryForDebug;
 
@@ -137,9 +135,7 @@ public final class SettingsValues {
         mKeyPreviewPopupOn = Settings.readKeyPreviewPopupEnabled(prefs, res);
         mSlidingKeyInputPreviewEnabled = prefs.getBoolean(
                 Settings.PREF_SLIDING_KEY_INPUT_PREVIEW, true);
-        final String voiceModeMain = res.getString(R.string.voice_mode_main);
-        final String voiceModeOff = res.getString(R.string.voice_mode_off);
-        mVoiceMode = prefs.getString(Settings.PREF_VOICE_MODE, voiceModeMain);
+        mShowsVoiceInputKey = needsToShowVoiceInputKey(prefs, res);
         final String autoCorrectionThresholdRawValue = prefs.getString(
                 Settings.PREF_AUTO_CORRECTION_THRESHOLD,
                 res.getString(R.string.auto_correction_threshold_mode_index_modest));
@@ -159,8 +155,6 @@ public final class SettingsValues {
         mKeyPreviewPopupDismissDelay = Settings.readKeyPreviewPopupDismissDelay(prefs, res);
         mAutoCorrectionThreshold = readAutoCorrectionThreshold(res,
                 autoCorrectionThresholdRawValue);
-        mVoiceKeyEnabled = mVoiceMode != null && !mVoiceMode.equals(voiceModeOff);
-        mVoiceKeyOnMain = mVoiceMode != null && mVoiceMode.equals(voiceModeMain);
         mGestureInputEnabled = Settings.readGestureInputEnabled(prefs, res);
         mGestureTrailEnabled = prefs.getBoolean(Settings.PREF_GESTURE_PREVIEW_TRAIL, true);
         mGestureFloatingPreviewTextEnabled = prefs.getBoolean(
@@ -201,7 +195,7 @@ public final class SettingsValues {
         mSoundOn = true;
         mKeyPreviewPopupOn = true;
         mSlidingKeyInputPreviewEnabled = true;
-        mVoiceMode = "0";
+        mShowsVoiceInputKey = true;
         mIncludesOtherImesInLanguageSwitchList = false;
         mShowsLanguageSwitchKey = true;
         mUseContactsDict = true;
@@ -214,8 +208,6 @@ public final class SettingsValues {
         mKeypressSoundVolume = 1;
         mKeyPreviewPopupDismissDelay = 70;
         mAutoCorrectionThreshold = 1;
-        mVoiceKeyEnabled = true;
-        mVoiceKeyOnMain = true;
         mGestureInputEnabled = true;
         mGestureTrailEnabled = true;
         mGestureFloatingPreviewTextEnabled = true;
@@ -274,14 +266,10 @@ public final class SettingsValues {
     public boolean isVoiceKeyEnabled(final EditorInfo editorInfo) {
         final boolean shortcutImeEnabled = SubtypeSwitcher.getInstance().isShortcutImeEnabled();
         final int inputType = (editorInfo != null) ? editorInfo.inputType : 0;
-        return shortcutImeEnabled && mVoiceKeyEnabled
+        return shortcutImeEnabled && mShowsVoiceInputKey
                 && !InputTypeUtils.isPasswordInputType(inputType);
     }
 
-    public boolean isVoiceKeyOnMain() {
-        return mVoiceKeyOnMain;
-    }
-
     public boolean isLanguageSwitchKeyEnabled() {
         if (!mShowsLanguageSwitchKey) {
             return false;
@@ -372,4 +360,18 @@ public final class SettingsValues {
         }
         return autoCorrectionThreshold;
     }
+
+    private static boolean needsToShowVoiceInputKey(SharedPreferences prefs, Resources res) {
+        final String voiceModeMain = res.getString(R.string.voice_mode_main);
+        final String voiceMode = prefs.getString(Settings.PREF_VOICE_MODE_OBSOLETE, voiceModeMain);
+        final boolean showsVoiceInputKey = voiceMode == null || voiceMode.equals(voiceModeMain);
+        if (!showsVoiceInputKey) {
+            // Migrate settings from PREF_VOICE_MODE_OBSOLETE to PREF_VOICE_INPUT_KEY
+            // Set voiceModeMain as a value of obsolete voice mode settings.
+            prefs.edit().putString(Settings.PREF_VOICE_MODE_OBSOLETE, voiceModeMain).apply();
+            // Disable voice input key.
+            prefs.edit().putBoolean(Settings.PREF_VOICE_INPUT_KEY, false).apply();
+        }
+        return prefs.getBoolean(Settings.PREF_VOICE_INPUT_KEY, true);
+    }
 }