Forgive me for asking the obvious, but have you remembered to turn on "Sync Contacts" in the iTunes/iPhone "info" tab, and properly configured your sync destination?
Forgive me for asking the obvious, but have you remembered to turn on "Sync Contacts" in the iTunes/iPhone "info" tab, and properly configured your sync destination?
I'm having the same issue. After updating to iOS5, I added a new contact on my phone. I plugged my iPhone 4 to my Macbook/iTunes for a backup and that new contact was not added to my MacBook's Address Book.