3367 Views 3 Replies Latest reply: Feb 22, 2009 10:39 AM by Andrew T.
Under the Podcasts tab for your iPhone sync preferences, there are various options. I have sync all unplayed episodes of selected podcasts to be transferred to my iPhone. If I listen to an podcast on my iPhone in it's entirety, the podcast will be removed from my iPhone when syncing with iTunes.
The iPhone includes a sync process - some of the data included with the sync process is a one way transfer process only from your computer to your iPhone such as iTunes music, and the same for selected photos to be transferred from your computer to your iPhone.
The sync process for contact info, calendar events, and Safari bookmarks with the supported applications on your computer is a bidirectional or true sync process. When syncing an iPhone for contact info the first time with a supported application on your computer that includes contact info, you will be provided a merge prompt if your iPhone includes any contact info that was manually entered in your iPhone's address book. This will merge the contact info between the two. After the first sync or merge for this data, it will be a bidirectional or true sync process. Change info for a contact on your iPhone, and the info will be changed for the contact info with the supported address book on your computer when followed by a sync, and vice-versa. Add a new contact with the supported address book on your computer, and the new contact will be transferred to your iPhone's address book during the next sync, and vice versa. The same applies to calendar events when syncing with a supported calendar app on your computer.
You may wish to also check out the link below just to add onto what Allan Sampson mentioned earlier. It goes into detail about Bi-Directional and Uni-Directional Syncing and merging information.
iPhone and iPod touch: Syncing and merging data