Integrated sensor in clutch assembly for determining angle of display

This application relates to a portable electronic device. The portable electronic device includes a housing including (i) a lower case, and (ii) an upper case pivotally coupled to the lower case with a hinge assembly. The housing includes a processor capable of providing instructions, an operational component in communication with the processor, where the processor is capable of executing a function, and a magnetic detection system included within the hinge assembly. The magnetic detection system includes a magnetic element capable of generating a magnetic field, and a magnetic sensor capable of determining an angle between the lower case and the upper case based on the magnetic field, where when the processor determines that the angle between the lower case and the upper case satisfies a predetermined threshold angle, the processor provides the instructions to the operational component to execute the function.