Signal does indeed drop badly compared to other phones if an iPhone 4 is held in particular way, some more detailed tests suggest. Using modified iOS firmware, Anandtech says it was able to track a more precise signal rating than is possible with the bars an iPhone normally displays. When cupping an iPhone 4 with a tight grip reported to cause signal loss, the site says it noticed a 24.6dB drop in signal; this compared to 14.3dB for an iPhone 3GS, and 17.7dB for a Google Nexus One. More relaxed grips cut signals by 19.8, 1.9 and 10.7dB for each handset, respective
