Our vCard import/export plugin is problematic anyway. It supports only the version 3.0 format and the 4.0 version was published August 2011. Oddly, my relatively recent smart phone only supports the 2.1 version.
Sample:
BEGIN:VCARD
VERSION:2.1
N:McCullough;Brian;;;
FN:Brian McCullough
TEL;CELL:3525551212
ADR;HOME:;;Main St.;Austin;Texas;78728;US
ORG:self
X-ANDROID-CUSTOM:vnd.android.cursor.item/relation;Brother McCullough;2;;;;;;;;;;;;;
X-ANDROID-CUSTOM:vnd.android.cursor.item/relation;Sister McCullough;13;;;;;;;;;;;;;
END:VCARD