The problem with nexus s is that the current update for I9023 is 2.3.4 which sadly doesn't allow user to have access to a setting called regulatory domain Now what this setting does is that it gives access to the all 14 channel and thus it allows you to connect to networks which are on channel above 11 which is mainly the case in Europe. There are ways of changing the settings to allow channels upto 14 or just connect to your network manually. source. 2nd method 1. Navigate to build.prop (usually in system) using root explorer. 2. Don't forget to change the file type from readonly to Read/Write on top of root explorer. 3. Change "ro.product.locale.region=US" to "ro.product.locale.region=EU" without semi colons. 4. Don't forget to save, then change the type to read only and then save and exit. 5. Reboot and enjoy 3rd method Last but not least. Obtain the latest CM7 rom, flash it and navigate to wireless settigs -> Advanced -> Regulatory Domain -> 14 Hope it helps !