"user-scalable = yes" does not allow user to scale JPGs

Mobile
1

I am using the following meta-tag to allow the user to enlarge the JPGs on my app:

<meta name="viewport" content="width=device-width, initial-scale = 1.0, minimum-scale = 1.0, maximum-scale = 5.0, user-scalable = yes">

However, the image does not enlarge in my Nexus 7 tablet on an HTML page. Is this a problem unique to my tablet, or is it wrong in general? I’ve read and re-read the documentation and see no problem with the syntax. Everything else in my app works like a charm except for this one thing.

Is there something else in an app that would undo the meta-tag?

2

These versions do not allow scaling in my Nexus 7 Android tablet:

  1. <meta name=“viewport” content=“width=device-width, initial-scale = 1.0, minimum-scale = 1.0, maximum-scale = 5.0, user-scalable = yes”>
  2. <meta name=“viewport” content=“width=device-width, initial-scale=1”>
  3. <meta name=“viewport” content=“width=device-width”>
3

I apologize for double-posting (a similar posting of 2 days ago). I didn’t think the previous post was working.