2012-08-20 9:23 - edited 2012-08-20 9:23
Thank you for your post and welcome to Nokia Discussions!
You did not mention in your post what application caused this problem or what connection you are attempting to use.
However, we would advise you to check your phone access point settings and if possible get new settings from your operator. Please see here for instructions on how to configure access points on your device.
If you are trying to access a WLAN, please see here for instructions on how to do it.
Let us know if this helps,