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Published on Aug 7, 2009
I wanted a slim, strong, light case for my iPhone 3GS. What better material than carbon fibre?
The case (an OSIR O-shield) is great - except I have now learnt that carbon fibre inhibits RF signals, thus cutting reception greatly in areas where the signal is less than perfect. The level of inhibition is around 40% to 60%, as measured by the iPhone's signal meter.
I guess this is why there's only 4 or 5 carbon fibre iPhone case manufacturers :)