Look at the meta viewport tag in your html and make sure that this is not listed
u mean remove this two coding?
Can you share your existing viewport meta tag?
Also, by "zoom my content" you're referring to pinch-to-zoom, right? Just want to be sure about the question.
You might also want to use a gesture library like HammerJS (http://hammerjs.github.io/ ). It's not going to implement the zoom for you, but it does provide the gestures that you can listen for and then respond appropriately with your own code (especially if you need to do something other than just changing font size).
<meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<link href="css/custom.css" rel="stylesheet">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" integrity="sha384-0mSbJDEHialfmuBBQP6A4Qrprq5OVfW37PRR3j5ELqxss1yVqOtnepnHVP9aJ7xS" crossorigin="anonymous"></script>
This is my existing viewport meta tag
yes. pinch to zoom but seem like phonegap build does not allow it.
So, taking Chris's advice above, you would change your meta tag to the following:
<meta name="viewport" content="initial-scale=1, minimum-scale=1, width=device-width" />
and see if that helps.
Keep in mind that zooming in this manner will zoom your entire app, including the user interface. If you need to only zoom content, you'll want to use a gesture library to achieve the same effect.