Do you have the .MobilMe service from Apple?
If you do, then the syncing of iCal & Address Book are done through it. Make sure that you have MobilMe sync turned on and that it is set to Sync Automatically.
If you do not have that service, attach your iPhone, select it in iTunes and check ALL the tabs to check their settings. You may find that updating iCal and Address Book settings have been changed.
It happens that I try to sync my iphone with itunes but I cannot have syncing between my mac and my iphone.
I tried to understand why it stopped working syncing, but I had no help.
Just a few months ago I had everything all right but now ...
I have a different number of contacts on my iphone 3g and on addressbook on my PB g4 (with Tiger) but when I synchronize with itunes (I have no warnings) but nothing happens.
It happens also that doesn't sync calendars.
I update my agenda in ical but when I synchronize instead of updating my iphone it seems that there is a merge between the two agendas.
So I cannot trust contacts and calendar: how could I believe that what I have is OK? I have always to check my events and I hope to have the right telephone number when I call somebody.
I don't even know if changes in older contacts are correctly updated.
I'd have to check every single contact, but it is crazy!
Is anyone able to help me?
Thank you very much