Capacitive touch screens are very analog devices that are very sensitive to manufacturing changes, temperature, etc, so interpreting and reading the touches is

Capacitive touch screens are very analog devices that are very sensitive to manufacturing changes, temperature, etc, so interpreting and reading the touches is quite complex and is a large factor in how well the touch screen works. That said, it's a solvable problem - really, the first iPhone in 2007 solved it. This shouldn't be an issue in 2016 anymore.