I have an Aeris Rail aluminum bumper. It is a very nice bumper that is also easy to install. I have not seen a significant drop in signal, but some have. The thread for this case is https://forums.macrumors.com/threads/1359333/.
They now have a Kickstarter project, which I have enthusiastically supported. The Rail will be made out of ballistic polycarbonate, so there will not be any signal loss.
Check it out!
http://www.kickstarter.com/projects/aeris/the-aeris-rail-a-modular-accessory-system-for-the
(
I do not work for them)
They now have a Kickstarter project, which I have enthusiastically supported. The Rail will be made out of ballistic polycarbonate, so there will not be any signal loss.
Check it out!
http://www.kickstarter.com/projects/aeris/the-aeris-rail-a-modular-accessory-system-for-the
(
I do not work for them)