What's Wrong With Apple's iOS 7.1?

From Mashable

Apple's iOS 7.1 update was released on Tuesday, delivering a noticeable boost in overall speed and responsiveness. But it soon turned out that the update also delivered a few problems — and a surprising number of visual tweaks.

See also: iOS 7.1 Speeds Up iPhone 4, Still Not as Fast as iOS 6

Inside iOS 7.1
A New Phone Interface

The most striking visual change is the telephone interface. Although the circular number key pads remain, the large square "call" button has been replaced by a small circle displaying a phone icon.

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