updated 03:06 pm EDT, Fri October 25, 2013
Said to affect outlying virtual keys
The iPhone 5s and 5c show poor touch detection along the edges of their displays, which may be affecting people's typing accuracy, says Finnish testing firm OptoFidelity. Via testing software and a robotic finger, the firm says that it found "extremely bad" accuracy near the edges, such that people trying to hit keys like Q, O, and P on iOS 7's virtual keyboard might have their touches misinterpreted. OptoFidelity only considers a result "accurate" if it's within 1mm of the robotic finger's actual position.
The Samsung Galaxy S3, by contrast, is said to have near-uniform accuracy across most of its display. "Because the touch accuracy is more even in Galaxy S3 than in iPhone 5s and iPhone 5c, you get a lot less typing errors, and letters which are close to the edge are working better," OptoFidelity writes.
Although the accuracy of the 5s and 5c is subpar, a September Agawi analysis of the iPhone 5's display -- on which the 5s and 5c are based -- found it to be twice as responsive as rival Android phones. Responsiveness is a measure of how fast a screen is able to respond to touch gestures.