Apple’s iOS 7 debuted today to strong reviews and favorable reception. The performance improvements are significant, even on older hardware, though reviews indicate that the three year-old iPhone 4 struggles with the new animations and transitions. But the odd thing here is that one phone — the Verizon iPhone 5 — takes an absolute wallop in battery life. All of the phones are negatively impacted by the iOS 6 to iOS 7 transition, but look what happens to the iPhone 5 under WiFi compared to iOS 6 and iOS 7.
These tests were conducted as part of Ars Technica’s hugely comprehensive review of the entire operating system, and what they show for the iPhone 5 is problematic for anyone looking to upgrade. We