pinch to zoom not working android code example

Example 1: mobile prevent zoom

<meta 
     name='viewport' 
     content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' 
/>

Example 2: how to disable pinch zoom on website for mobile devices

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />