Picked mine up at Best Buy this morning (10AM). I was the only person there for one. In the BBuy parking lot, I paired Bluetooth to my car radio and had the phone navigate me home. I thought it did a great job and I love the satellite view in the Google Navigation. I purposely went home a different way than it wanted me to so I could see how quickly it noticed I was off course and could re-route. Within a few seconds it picked me up and rerouted (I tried this three times). I couldn't tell any difference between it and the GPS from my iPHone 4. I use a vent mount so the phone sits about even with the top of the dash and can "see" pretty well out the front window towards the sky.
I am enjoying the heck out of it and the voice commands/navigation/texting..... I put it in the driving mode and gave it the "hey galaxy". Worked great. Love it.
This is my first android phone. When you are at your house how do you know when you are using your wifi vs your data plan. TIA



got mine @ 11AM