At my workplace, half of the first floor is not covered by AT&T due to the structure of the building. I happen to have my desk in this area of the building. Now, we have wifi covering the whole building. When I walk to the half of the building that works with AT&T, the wifi kicks in and everything works great. But when I go into the area only covered by AT&T (my desk), suddenly safari complains about not having access to edge and nothing works. This is despite having full wifi bars. Anybody have any ideas?