I own an HTC EVO 4G since they first came out. I also synch its calendars and contacts with my IPAD which uses google contacts and calendar. If you use the birthday field on the Evo contact entry, the day stays with the contact, but does not synch with the Evo's google calendar. I have stopped using the EVO birthday field in Evo contact, and put all birthdays,anniversaries into google calendar with annual repeat selected, and a one week default alarm so that I can still send out a card in the mail with the alarm set. if you chose to also click birthdays in an IPAD contact, the red colored giftbox icon for a birthday as well as your added google calendar entry now shows 2 birthday events on your IPAD calendar only, as the IPAD birthday also does not appear as an entry on your EVO. See my posts on EVO inability to place FNF and LNF in a Evo or google contact. Ted Bates