I have ordered one hope to get it next week so I could check if it block the signal for me currently I`m very happy with my Neo Hybrid case from Spigen but I like to check how the phone will look if it`s aluminium and will it work.
I was thinking about getting those but the back cover needs to be removed to use it. What I'm looking at now is the fine day cases. They come in metal frame glass back or leather and the frame goes on but the back goes on top of the back case. And just my honest opinion looks Way way better than thsee metal cases (also doesn't hurt the signal as bad) have a look.
Originally discovered during my n3 days: xdaforums.com/showthread.php?t=2718390&page=2