The iPhone 4 Redux: Analyzing Apple's iOS 4.0.1 Signal Fix & Antenna Issue
by Brian Klug & Anand Lal Shimpi on 7/15/2010 12:28:00 PM In case you haven't noticed, the iPhone 4's antenna design has come under considerable scrutiny. In our iPhone 4 review, we investigated the iPhone 4 antenna and came to two conclusions. First, that iOS 4 was displaying signal bars in an overly optimistic manner, compressing the dynamic range of possible signal bars users can see. Second, we identified a worst case signal drop of around 24 dBm when the iPhone 4 is cupped tightly in the left hand, covering the black strip and possibly detuning the antennas and adding additional attenuation from the presence of the hand. Since those initial measurements, we've been working tirelessly to both characterize the problem, fully understand the mechanisms behind it, and report on a number of possible solutions. ... http://www.anandtech.com/show/3821/iphone-4-redux-analyzing-apples-ios-41-signal-fix _______________________________________________ Medianews mailing list Medianews@etskywarn.net http://lists.etskywarn.net/mailman/listinfo/medianews
