diff --git a/src/org/kiwix/kiwixmobile/KiwixMobileActivity.java b/src/org/kiwix/kiwixmobile/KiwixMobileActivity.java
index 511d7ad4a..25cde0af9 100644
--- a/src/org/kiwix/kiwixmobile/KiwixMobileActivity.java
+++ b/src/org/kiwix/kiwixmobile/KiwixMobileActivity.java
@@ -5,13 +5,10 @@ import android.app.FragmentTransaction;
 import android.content.ClipData;
 import android.content.Context;
 import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.res.Configuration;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
-import android.preference.PreferenceManager;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentActivity;
 import android.support.v4.app.FragmentManager;
@@ -34,13 +31,14 @@ import android.widget.LinearLayout;
 import android.widget.Spinner;
 
 import java.util.ArrayList;
-import java.util.Locale;
 
 public class KiwixMobileActivity extends FragmentActivity implements ActionBar.TabListener,
         View.OnLongClickListener, View.OnDragListener, KiwixMobileFragment.FragmentCommunicator {
 
     public static ArrayList<State> mPrefState;
 
+    public static boolean mIsFullscreenOpened;
+
     private ViewPagerAdapter mViewPagerAdapter;
 
     private ViewPager mViewPager;
@@ -80,6 +78,8 @@ public class KiwixMobileActivity extends FragmentActivity implements ActionBar.T
 
         mPrefState = new ArrayList<State>();
 
+        mIsFullscreenOpened = false;
+
         setUpViewPagerAndActionBar();
 
         // Set the initial tab. It's hidden.
@@ -118,6 +118,10 @@ public class KiwixMobileActivity extends FragmentActivity implements ActionBar.T
                     mActionBar.setSelectedNavigationItem(position);
                 }
 
+                // Set the visibillity of the fullscreen button
+                int visibillity = mIsFullscreenOpened ? View.VISIBLE : View.INVISIBLE;
+                mCurrentFragment.exitFullscreenButton.setVisibility(visibillity);
+
                 // If the app is in landscape mode, Android will switch the navigationmode from
                 // "NAVIGATION_MODE_TABS" to "NAVIGATION_MODE_LIST" (as long as the app has more than 3 tabs open).
                 // There is no way to update this Spinner without creating an extra adapter for that.
@@ -221,7 +225,7 @@ public class KiwixMobileActivity extends FragmentActivity implements ActionBar.T
                 break;
 
             case R.id.menu_fullscreen:
-                if (mCurrentFragment.isFullscreenOpened) {
+                if (mIsFullscreenOpened) {
                     closeFullScreen();
                 } else {
                     openFullScreen();
@@ -248,14 +252,14 @@ public class KiwixMobileActivity extends FragmentActivity implements ActionBar.T
         mCurrentFragment = getCurrentVisibleFragment();
 
         getActionBar().hide();
-        mCurrentFragment.exitFullscreenButton.setVisibility(0);
+        mCurrentFragment.exitFullscreenButton.setVisibility(View.VISIBLE);
         mCurrentFragment.menu.findItem(R.id.menu_fullscreen)
                 .setTitle(getResources().getString(R.string.menu_exitfullscreen));
         int fullScreenFlag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
         int classicScreenFlag = WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN;
         getWindow().addFlags(fullScreenFlag);
         getWindow().clearFlags(classicScreenFlag);
-        mCurrentFragment.isFullscreenOpened = true;
+        mIsFullscreenOpened = true;
     }
 
     private void closeFullScreen() {
@@ -264,12 +268,12 @@ public class KiwixMobileActivity extends FragmentActivity implements ActionBar.T
         getActionBar().show();
         mCurrentFragment.menu.findItem(R.id.menu_fullscreen)
                 .setTitle(getResources().getString(R.string.menu_fullscreen));
-        mCurrentFragment.exitFullscreenButton.setVisibility(4);
+        mCurrentFragment.exitFullscreenButton.setVisibility(View.INVISIBLE);
         int fullScreenFlag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
         int classicScreenFlag = WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN;
         getWindow().clearFlags(fullScreenFlag);
         getWindow().addFlags(classicScreenFlag);
-        mCurrentFragment.isFullscreenOpened = false;
+        mIsFullscreenOpened = false;
     }
 
     @Override
diff --git a/src/org/kiwix/kiwixmobile/KiwixMobileFragment.java b/src/org/kiwix/kiwixmobile/KiwixMobileFragment.java
index ea0f07816..da6df9afe 100644
--- a/src/org/kiwix/kiwixmobile/KiwixMobileFragment.java
+++ b/src/org/kiwix/kiwixmobile/KiwixMobileFragment.java
@@ -102,8 +102,6 @@ public class KiwixMobileFragment extends Fragment {
 
     public KiwixWebView webView;
 
-    public boolean isFullscreenOpened;
-
     public ImageButton exitFullscreenButton;
 
     public AutoCompleteTextView articleSearchtextView;
@@ -140,7 +138,6 @@ public class KiwixMobileFragment extends Fragment {
         requestInitAllMenuItems = false;
         nightMode = false;
         isButtonEnabled = true;
-        isFullscreenOpened = false;
     }
 
     @Override
diff --git a/src/org/kiwix/kiwixmobile/LanguageUtils.java b/src/org/kiwix/kiwixmobile/LanguageUtils.java
index 6b937e7c4..3115ac397 100644
--- a/src/org/kiwix/kiwixmobile/LanguageUtils.java
+++ b/src/org/kiwix/kiwixmobile/LanguageUtils.java
@@ -149,11 +149,6 @@ public class LanguageUtils {
         }
     }
 
-    private boolean isLanguageSet() {
-
-        return false;
-    }
-
     // Get a list of all the language names
     public List<String> getValues() {
 
@@ -193,7 +188,6 @@ public class LanguageUtils {
 
         @Override
         public View onCreateView(String name, Context context, AttributeSet attrs) {
-            Log.e("kiwix", name);
 
             // Apply the custom font, if the xml tag equals "TextView", "EditText" or "AutoCompleteTextView"
             if (name.equalsIgnoreCase("TextView")
@@ -229,11 +223,10 @@ public class LanguageUtils {
 
         // This method will determine which font will be applied to the not-supported-locale.
         // You can define exceptions to the default DejaVu font in the 'exceptions' Hashmap:
-        // Key: the language code; Value: the name of the font.
-        // The font has to be placed in the assets folder.
         private String getTypeface() {
 
-            // Define the exceptions to the rule
+            // Define the exceptions to the rule. The font has to be placed in the assets folder.
+            // Key: the language code; Value: the name of the font.
             HashMap<String, String> exceptions = new HashMap<String, String>();
             exceptions.put("my", "Parabaik.ttf");