Did invitations go to her PC before she added the iPhone? If so...it's not an iPhone issue. also check to see how many calendars she now has in Exchange and which calendars she is viewing on her PC. When I added the iPhone, I ended up with 2 calendars; one for entries from the PC and one for entries from the iPhone. Being lazy, I have not gotten to unifying the two into one.
03-19-2011 10:08 AM