Heads up: avoid the aluminium/metal full covers... topic

I've been looking forward to an 'aluminium' cover to arrive from China... today it did... it fits OK, looks OK but I realised just now that it completely kills the network signal... as in it goes from full bars to no network found when you put the backplate on.

This is it in case people have been thinking about getting one:

http://www.ebay.co.uk/itm/231439528962