According to testing completed by OptoFidelity, using their Touch Panel Performance Tester to measure how accurate a device’s touche screen may register input, Apple’s iPhone 5s and 5c are a bit lacking in the accuracy department. According to this study, the iPhone 5s and 5c had significant accuracy degradation around the edges of the screen as well as near the top of the touch screen. The Galaxy S3, made by Samsung, had errors around the border of the screen but nowhere near as many as the iPhone 5c and 5s. Coincidentally, the top of the screen and the bottom large border happens to be where a majority of navigation icons and keyboards may be placed and not having sufficient accuracy here may lead to issues with applications and input. This is important because while an application may be the best thing since sliced bread, a good application may never be able to overcome poor hardware and poor hardware accuracy can cause issues with input and typing, leading to a frustrating user experience. This shows the importance of testing upon multiple platforms and multiple hardware setups to ensure apps work as designed, even with possible design considerations due to known hardware deficiences.