When you attempt to connect to a web site using the BlackBerry® Browser on a BlackBerry smartphone, you receive the following error message:
HTTP 400 - Bad Request
When you click on details it shows
SocketException Connection Reset
We had this issue with all of our blackberry handheld devices when users were browsing websites that were blocked by company webfilter through policies. If you want to allow access to websites that you don't generally allow then you must put in exceptions for your BES server to bypass the webfilter or allow access to your BES server to the specific websites that you are receiving the above error message for.