Those of you who pre-ordered the T-Mobile G1 probably have it in your hands by now. Our friend Mattias got his and he gave us his impressions. He says the OS is fast.

"I like the interface better than the iPhone. It's not as intuitive as the iPhone, but it has a lot more options and features (especially if you are a Gmail user).

I also like that it has the hardware buttons for controlling the phone. It's a little bit clunky but I can live with that.

The coolest thing with this phone is that as soon as I powered it up it asked for my Gmail credentials. A few seconds later all my contacts, calendar events and emails were synced."

Here are a few pics: