We love a good colored diagram here at SlashGear, and so this comparison chart showing just how Apple has changed iPhone signal strength bar mapping in their latest iOS 4.0.1 update is tickling us nicely. The handiwork of AnandTech reader Mike Escoffery, it shows the considerable margin by which Apple emphasized a "full bars" signal. Meanwhile, while there was no mention of it in the iTunes release notes, iOS 4.0.1 also addresses Exchange ActiveSync problems.
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