I was able to successfully send a single contact using both wi-fi and phone network. A few niggling issues: sends contact as vcard only - no option to send as text; sends a single contact only - no multiple contact selection; requires manual entry of destination email address - no contacts look-up; escapes "," i.e. dialing pauses, with a "" in phone numbers, but does not remove them in final vCard; text accompanying emailed contact (potentially) incorrectly references contact as "my contact information" when in fact it could be anyones; selection of contact fields to send is on a seperate page to contact detail - it would be a better user experience if they were integrated on the same page i.e. in preview.