jfruh writes "Every time a company rolls out a new version of a product, it extols how much better it is than the previous version. Thus, Apple spent a part of its iPhone 5 rollout touting the staying power of the latest version of its battery. But have iPhone batteries really seen improvement since the original came out in '07? Kevin Purdy crunches the number and concludes that, whiile the 5's battery beats the 4S's, we still haven't returned to the capabilities of the original phone."
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