With my Corporate Directory CapStone project I found myself needing to format a phone number in phone fields like cell phone, home phone, office phone, etc.  I was surprised to find this is not as easy on an iPhone as you may think.  Even though clearly Apple has this functionality in Contacts they have no Public API for phone formatting.  You may think what’s the big deal anyhow. Well, in the US you could have a leading 1 or not and you want to be consistent with area code segmentation and then there are international numbers.  I started looking on stackoverflow but thought there ought to be a better way than implementing my own NSFormatter. Continue reading →