tony sayer wrote:

In article .com, Rob
writes

Why not open the phone up and remove the antenna. Loads of attenuation
can be achieved by that method

And possible PA damage!...

Same could apply operating it in a biscuit tin, unless you introduce
some RF absorbent lining.

So how about a dummy load connected via a length of coax into the outer
of which you cut some slots, leaky-feeder style?

--
Andy