How to make exception of SQLite insert function

I'm using SQLite to save contacts, I'm retrieving contacts from a server.

I make an SQLite database with a unique value for each contact (Phone number) as you can see here :

  public void onCreate(SQLiteDatabase db) {

        String CREATETABLE = "CREATE TABLE contacts ( " +
                "id INTEGER PRIMARY KEY AUTOINCREMENT, " +
                "name TEXT, "+
                "profil TEXT, "+
                "phone TEXT UNIQUE ,"+
                "show TEXT )";

        db.execSQL(CREATETABLE);
    }

and then I made a function to be able to insert a new contact :

public void addcontact(contacts contact){

        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put("name", contact.getName());


values.put("phone", contact.getNumero());
    values.put("profil", contact.getProfil());
    values.put("show", contact.getShow());
    try {
        db.insert("contacts", // table
                null, //nullColumnHack
                values); 
    } catch (Exception e){

    }

    db.close();
}

But when I'm trying to insert contact already inserted with the same phone number I get an error in the log :

E/SQLiteLog﹕ (2067) abort at 15 in [INSERT INTO contacts(phone,name,show,profil) VALUES (?,?,?,?)]: UNIQUE constraint failed: contacts.phone

How Can I handle that error and show a log message for example that the contact exists already ?