Google Nexus one is now out and many people have purchase this phone but now some of them have issue with 3G connectivity and there is no officially statement from Google to solve this problem so here is simple temporary fix to solve this undesirable issue. This workaround changes the phone settings so that you always use 3G network.

Steps to fix Nexus One 3G problem

1. In your phone dialer, dial *#*#4636#*#*.

2. You will now be in the testing mode, and will see four options. Select/Tap the Phone Information.

3. Scroll down to the Set Preferred Network type setting.

4. Tap the dropdown just beneath the preferred network type setting and select WCDMA only.