As @roxan seemed to be indicating, there is a legal suit against HTC in which Apple claimed a patent on this ability to convert clicking on phone numbers and email addresses into actionable links on smartphones.
This December 2011 article says:
Apple also has civil patent infringement cases against HTC and
Samsung. Both Asian rivals have also filed their own retaliatory
actions to the ITC and in U.S courts
and this article indicates Apple opened four lawsuits (as of February 2012) against Samsung for patent infringement, including the ability to make phone numbers clickable.
So it looks as if other manufacturers may be rolling back this feature early, for fear of Apple's patent troll tearing down their towns and eating their goats (and your ability to click phone numbers).