Originally Posted by Fritzly
Yes, the case makes the difference.
Without the case signal loss; with the case no signal loss.
I tried several times and I can always reproduce it.
Interesting. I certainly believe you, but it seems to imply that there is some physical contact with antenna elements without the case. Playing with mine with various materials between my hand an the HD7, I can get it to drop some bars most all the time. Slipped into a zip lock made almost no difference in the amount of reaction. The thicker I got, up to a Sena case made for an HP PPC, the fewer bars I was able to loose. Does seem to have something to do with the material and thickness, between the hand and device. You do exhibit capacitance which could conceivable de-tune an antenna system. It's the same quality that makes a theramin work. I'll still maintain that most every phone is subject to the same phenomena. Certainly some more than others.
Sometimes you are the anteater, sometimes you are the ant.