Click to call button not shown

Hi,
Please could you browse my code and see if you spot a problem.
My problem is recently the click to call button is not shown on my mobile.

I have listed an item on ebay and here is the link for a click to call that works fine.
http://www.ebay.co.uk/itm/1121650214...84.m1555.l2649

I then copied that code above & just made an edit to the item for sale,but the click to call is not shown on the mobile.
http://www.ebay.co.uk/itm/4012053510...84.m1558.l2649

Click to call button is only shown for mobile screens so nothing is then seen on pc.
Ive looked though a few times but dont see why its not shown.