Difference between Sync and Backup?

excellent explanation - thank you!!!!!

I agree. It makes NO sense whatsoever. I've never had problems like this, with such an essential, basic function, with PCs.

how do i sync without backup step2??,

as its taking hours, dont even have anything on my device to back up!!!

been restoring my iphone4s 10+ times for days now just cant get it to work properly

Ok, so I found the snapshot on my computer! Thank you! Now, how do I get it back to restore onto my wife's phone? What steps do I take?

"The other photos are what was sync'd from your computer."

OK, so how do I delete those from the iPhone?

Select your iphone in iTunes, click the Photos tab and select what you want to sync.

If the above information is corect, then I already have all of them on my PC. So I don't want to sync them. I just want to delete them from the iPhone and ONLY from the iPhone.

Is there a question there ?

Uncheck the box to sync if you don't want any photo on it.

It's unchecked now, though maybe I haven't done a sync since finding out that one can do a backup without syncing. I'll give that a try.

Technically, Yes but i'm not an expert on this but i did lost my other backup after i backup last week...

I think the're the same thing : backuping something to the computer.

No - I have explained the difference just above your post. They are not the same in the world of Apple.

GB