database insertion working well on android emulator but not on device

I have created a database using this tutorial .

When I insert the values in my table, it works on the emulator and I have seen the values are inserted correctly. But when I run my application on a device, it gives me this error:

02-29 17:30:45.341: E/Database(3300):android.database.sqlite.SQLiteException:no such   table: recently_used: , while compiling: INSERT INTO recently_used(iconsset_name, icon_name) VALUES(?, ?); 

02-29 17:30:45.341: E/Database(3300):   at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method) 

02-29 17:30:45.341: E/Database(3300):at   android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92) 

02-29 17:30:45.341: E/Database(3300):at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)

02-29 17:30:45.341: E/Database(3300):   at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83) 

02-29 17:30:45.341: E/Database(3300):   at android.database.sqlite.SQLiteStatement.<init>  (SQLiteStatement.java:41)

Here is my database class.

public class DBHelpter extends SQLiteOpenHelper{



    private static final String DATABASE_NAME = "DatabaseName.db";



    public static final String ICONS_SET_TABLE_NAME = "iconset";

    public static final String ID_ICONS_SET = "_id";

    public static final String NAME_ICONS_SET ="name";

    public static final String SERVER_ID_ICONS_SET = "serverid";

    public static final String PRODUCT_ID_ICONSET = "productid";



    public static final String ICON_TABLE_NAME = "icons";

    public static final String ID_ICONS = "_id";



    public static final String SERVER_ICON_ID = "serverid";

    public static final String ICONSET_ID_ICONS = "iconsetid";



    public static final String RECENTLY_USED_TABLE_NAME = "recently_used";

    public static final String ICONS_NAME_RECENTLY = "icon_name";

    public static final String ICONSSET_NAME_RECENTLY = "iconsset_name";

    public static final String RECENTLY_ICONSET_ID = "_id";





    public static final int DATABASE_VERSION_NO = 3;

    public Context mContext = null;



    public static final String mIconsSetQuery = "CREATE TABLE "+ICONS_SET_TABLE_NAME + "(" + ID_ICONS_SET +" INTEGER PRIMARY KEY AUTOINCREMENT," + NAME_ICONS_SET +" TEXT," + SERVER_ID_ICONS_SET +" INTEGER," + PRODUCT_ID_ICONSET +" TEXT);";

    public static final String mIcons = "CREATE TABLE "+ ICON_TABLE_NAME + "(" + ID_ICONS+ " INTEGER PRIMARY KEY  AUTOINCREMENT,"+ SERVER_ICON_ID + " INTEGER,"+ICONSET_ID_ICONS + " INTEGER);";

    public static final String recently_table_query = "CREATE TABLE "+ RECENTLY_USED_TABLE_NAME + "(_id INTEGER PRIMARY KEY AUTOINCREMENT, icon_name TEXT,iconsset_name TEXT);";



    public DBHelpter(Context context) {



        super(context, DATABASE_NAME, null, DATABASE_VERSION_NO);

        mContext = context;

    }



    @Override

    public synchronized void close() {

        super.close();

    }



    @Override

    public synchronized SQLiteDatabase getReadableDatabase() {

        return super.getReadableDatabase();

    }



    @Override

    public synchronized SQLiteDatabase getWritableDatabase() {

        return super.getWritableDatabase();

    }



    @Override

    public void onCreate(SQLiteDatabase db) {



        db.execSQL(mIconsSetQuery);

        db.execSQL(mIcons);

        db.execSQL(recently_table_query);



    }



    @Override

    public void onOpen(SQLiteDatabase db) {

        super.onOpen(db);

    }



    @Override

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {

        db.execSQL("DROP TABLE IF EXISTS " + ICONS_SET_TABLE_NAME);

        db.execSQL("DROP TABLE IF EXISTS " + ICON_TABLE_NAME);

        db.execSQL("DROP TABLE IF EXISTS " + RECENTLY_USED_TABLE_NAME);



        onCreate(db);

    }

}

Here is the method i am using.

public void recentlyUsed(RecentlyUsedIcons recentlyUsedIcons) {



     values.put(DBHelpter.ICONS_NAME_RECENTLY, recentlyUsedIcons.getIcon_name());

     values.put(DBHelpter.ICONSSET_NAME_RECENTLY, recentlyUsedIcons.getIconSet_name());

     mDatabase.insert(DBHelpter.RECENTLY_USED_TABLE_NAME, null, values);

}