We are looking at an existing (non-responsive) site whose width is 1230 or so. So on mobile devices its content, even compressed as it is, loses about 10% off to the right.
That's bad, as their phone number (plenty large enough to see, even compressed on a mobile) is right aligned and we lose some of the digits unless the viewer scrolls across.
As a quick stop-gap remedy I figured we could set:
<meta name="viewport" content="width=1235">
But that's ignored on the phone I'm testing with.
I've checked that the phone responds to a much lower viewport width - if I set it to 300 or something than I get zoomed in content (top left hand corner), as you'd expect. Just it doesn't respond to a viewport set beyond 1024.