Remove "Allow guest to use phone" from devices without telephony.

Bug: 282741809
Test: atest UserSettingsTest
Change-Id: I8c24dc021f1461c00765b41bf80f352948d14e43

res/values/strings.xml

@@ -6419,7 +6419,7 @@
     <!-- Search keywords for the "Delete Guest Activity" section in Multiple Users Screen. [CHAR LIMIT=NONE] -->
     <string name="remove_guest_on_exit_keywords">delete, guest, activity, remove, data, visitor, erase</string>
     <!-- Title of preference to enable guest calling[CHAR LIMIT=40] -->
-    <string name="enable_guest_calling">Allow guest to use phone</string>
+    <string name="enable_guest_calling">Allow guest to make phone calls</string>
     <!-- Summary of preference to enable guest calling [CHAR LIMIT=NONE] -->
     <string name="enable_guest_calling_summary">Call history will be shared with guest user</string>
 

src/com/android/settings/users/GuestTelephonyPreferenceController.java

@@ -17,6 +17,7 @@
 package com.android.settings.users;
 
 import android.content.Context;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.UserManager;
 
@@ -73,6 +74,7 @@ public class GuestTelephonyPreferenceController extends TogglePreferenceControll
     public void updateState(Preference preference) {
         super.updateState(preference);
         mUserCaps.updateAddUserCapabilities(mContext);
-        preference.setVisible(isAvailable() && mUserCaps.mUserSwitcherEnabled);
+        preference.setVisible(isAvailable() && mUserCaps.mUserSwitcherEnabled && mContext
+                .getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY));
     }
 }