Chump

Do speed tests count as a measure local usability? http://www.cultofmac.com/the-iphone-4-death-grip-is-real-but... versus http://www.youtube.com/watch?v=kYmVpoccPnc

He tries to emphasize that it happens in only "marginal strength areas" (see also this other post: http://daringfireball.net/linked/2010/06/29/gaywood-signal-i... ) but iPhone 4s displaying 'full bars' have been shown to suffer the problem (e.g. http://www.youtube.com/watch?v=tNmXrVNeGzs )