Conditionally remove settings that aren't required on the tablet.

Bug: 2985267

Changes not done : SD card related stuff, as we need some way still
to figure out if there is a real SD card in the device.

Change-Id: I21c41f18ebe6c050981918481a7f6d69f04b65d0

src/com/android/settings/Utils.java

@@ -16,23 +16,24 @@
 
 package com.android.settings;
 
+import java.util.List;
+
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
-import android.os.SystemProperties;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.res.Resources;
 import android.content.res.Resources.NotFoundException;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
+import android.os.SystemProperties;
 import android.preference.Preference;
 import android.preference.PreferenceGroup;
+import android.telephony.TelephonyManager;
 import android.text.TextUtils;
 
-import java.util.List;
-
 public class Utils {
 
     /**
@@ -207,4 +208,13 @@ public class Utils {
     public static boolean isMonkeyRunning() {
         return SystemProperties.getBoolean("ro.monkey", false);
     }
+
+    /**
+     * Returns whether the device is voice-capable (meaning, it is also a phone).
+     */
+    public static boolean isVoiceCapable(Context context) {
+        TelephonyManager telephony =
+                (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        return telephony != null && telephony.isVoiceCapable();
+    }
 }