It is way late to write a review about Nexus One. People don’t need reviews of it at this time. You can find lots of reviews. What I want to let people know is that an earphone attached to Nexus One is so good. I had been using an Audio-technica’s almost $100 earphone. It’s not cheap nor very expensive. It satisfied my minimum demand as a musician, for iPod. Recently I lost it. That’s the reason I started using Nexus One’s earphone at this late timing. I judged the earphone must not be good because it is just an earphone attached to a cellphone. I didn’t even open it. I was totally wrong. Nexus One’s earphone is so good. I like this more than former one I lost. It is worth $100 for me. I bought Nexus one for $580, but now I kinda feel that I bought cellphone for $480 and earphone for $100, on which cute Android character is 

Android携帯でのお話。SMSを受信したら、Google VoiceとMessagingの二つのアプリケーションがNotificationを出すので鬱陶しいなぁと思っていたのです。GV番号にかかってきた電話をT-mobileの携帯に転送するのはいいんですが、SMSは要らないんだよなーと思いつつ、これ、一瞬分からなかったんですが、ググッたらすぐ出てきました。

I misunderstood that I could call for free with Google Voice. But even if you use GV for your call, it uses your mobile phone call, so you will use your minutes or be charged. Some people are explaining a solution for this problem, I mean “How to Make Unlimited Free Calls on Your Cellphone with Google Voice”. You can learn from this article. BUT