3.0 works as a 1st level beta should be expected to work.
There are things missing that were there before, screens freeze, music data bases need to be reset, and 3rd party native apps will not all work. Apples native apps have some errors and issues but are to be expected with a completely rewritten software package...thus the need for beta.
Battery life is terrible...I am experimenting between running everything on and turning various things off to see what drains and what does not.
I do not have 3G in my areas so it is off. I have been running blue tooth stack on with two headsets paired, locator service on, fetch on, auto bright on and WiFi on...Batterly lasts less then 6 hours. Have started switching stuff off to see what the poser hog is.
This beta also has massive memory leaks. Using the App FreeMemory you can free up 20mb of memory and watch it shrink back down to less then 5mb in less then 10 sec, repeat and the same thing happens.
The phone works and for the most part it works as I expected a first release beta to work. The iPhone is usable and allows me to still continue as before with a few hiccups here and there and a lot of patience and understanding.
It is up to the user and understanding their use level and patience level...if its hi/lo....don't do it.