Originally Posted by Darth_Penguin
I just tested this both ways. I made a new contact in my phones contacts, showed up on gmail's contacts, deleted from gmail contacts and it deleted from my phones contacts. I then made a new contact from my phone, waited for it to show up on gmails contact list, deleted it from my phone contacts, refreshed gmail and its still there.
It appears that if you add a contact to gmails contact list the only way to remove it is via gmail, even if you delete it off your phone. I dont think this is really a bad idea because in the event that you mistakenly delete someone it will still be up on gmail.
OK, I took this one step further just to test a more few things. Somehow gmail knows which contacts you have deleted off your phone because even though they stay on your gmail contact list they dont resync. I tested this by adding a new contact on gmail while leaving the previously deleted contacts in place. I then checked my phone and only the new contact synced to the phone. I have to say, its pretty impressive.