Actual Metal Bumpers that doesnt affect signal?

No such thing as a metal bumper that doesn't affect signal. The Element aluminum bumpers seem to do better than most. Of course you'll pay through the nose for one. Good luck.

6thDAY said:

Can anyone recommend me iphone 5/5S bumpers that are actual metal, and not anodized plastic?

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I've tried over 35 aluminium bumpers. Only the Al13 and Elago S5 aluminium bumpers (which is junk) do not degrade the signal. Literally I noticed no difference in signal strength. Though out of 3 AL13 bumpers I got (different colors) one was slightly deformed and affected call quality until I bent it slightly.