title: How to call Android calculator on my app for all phones
body: <pre><code>  public static final String CALCULATOR_PACKAGE ="com.android.calculator2";
    public static final String CALCULATOR_CLASS ="com.android.calculator2.Calculator";
    Intent intent = new Intent();
  
      intent.setAction(Intent.ACTION_MAIN);
           intent.addCategory(Intent.CATEGORY_LAUNCHER);
          intent.setComponent(new ComponentName(
           CALCULATOR_PACKAGE,
           CALCULATOR_CLASS));
  </code></pre>
  
  <p>the above works for HTC only </p>
  
  <pre><code>  public static final String CALCULATOR_PACKAGE ="com.sec.android.app.popupcalculator";
    public static final String CALCULATOR_CLASS ="com.sec.android.app.popupcalculator.Calculator";
  </code></pre>
  
  <p>the above works for S3</p>
  
  <p>I need a code that works for all of them. Someone with any clue ?Please give an example code </p>