I have to confess that I was quite excited about the PUSH mode feature on the new iPhone, but the truth is that after installing firmware 2.0, I had only used it for one day.
First of all, for you Apple, Gods when it comes to usability, you really failed on this one. There are like 5 different menus to go in order to configure syncing/push/fetch over the air. I’m not a newbie and I had to search on the internet to see how certain things work, like the FETCH manually mode. It’s quite obvious when it comes to Mail, but not so obvious when it comes to FETCH manually the calendar or contacts.
Second, I didn’t have time to check how the PUSH mode really works, but I know it drains out my battery in less than a day.
Now, I’m happy with the FETCH mode syncing every hour.
PS: Fix the BT. My car’s hands free is not able to download the contacts from the phone since I upgraded to firmware v2.0.