Somewhat unrelated, but I've grown to dislike the Skype addon for Firefox because of its phone number recognition. It gets far too many false positives. Even numbers several digits short of being a phone number are often mistaken as one, throwing off the formatting of the page.
I know, but I'm lazy and I'd like to be able to know by looking at a link instead of tapping and holding each number for a few seconds (and then pressing the cancel button if it's a phone number).
Apple could put a little phone icon to the left or right of the auto-generated links. In my usage though phone numbers are very rarely linked (where would they go?), so when I see a linked one on an iOS device I assume it will trigger a phone call.