What do you mean by "half of the screen"? OS6 comes with a completely different browser (Webkit) and there is no column view anymore. So if you only see part of the web page you should zoom and scroll so you can read everything.
If that isn't to your liking, you can use a 3rd party browser like Opera Mini (use beta 2 with OS6). That will give you page view. Posted via BlackBerryForums.com Mobile