iOS 4 vs. iOS 4.0.1 (and iOS 4.1) signal mapping changes
Anandtech compared the differences in signal mapping between iOS 4 and iOS 4.0.1 (and iOS 4.1) and concluded that Apple has indeed produced a much more reliable system (meaning the old system was less than honestly reporting strength):
That was my experience as well -- even with iPhone 3GS.
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.
By Kevin Lynch