Question by Azwethinkweiz: How do iPhone tilt sensors work? How do iPhone Touch Screen Work?
Even after I broke the screen to my iPhone, the touch sensor still works. I’m curious about how both work. Thanks.
Best answer:
Answer by Josh S
iPod touches and iPhones use a heat sensor, instead of the typical pressure sensors found in those phones. That is why you cannot use a stylus.
Add your own answer in the comments!
The guy above is an utter idiot, there is not a screen in the world that uses “heat technology”. Instead it uses changes in electrical current. When you press your finger down on the screen there are tiny sensors that change distance between each other, thus changing electrical charge between them.
The second question is an accelerometer, it works by using tiny weighted springs which pressure or other sensors read their level. Gravity will push each axis’ spring which is loaded with a specific mechanical resistance.
The iPhone then reads the levels of each sensor to find out what direction the iPhone is facing, how fast it’s moving, and what angle it’s tilted at. by reading different combinations of the axis’ values, the iPhone’s firmware can then send presets and exact information to applications.