The iPad may have originally been meant to have a gyroscope like that in the iPhone 4, says UBMTechInsights. A senior analyst with the firm, Steve Bitton, points out that an empty slot is present on the iPad motherboard, conveniently sized to the dimensions of the STMicroelectronics gyroscope found in the latest iPhone. The pin arrangement is different, though, matching that of another gyroscope chip made by InvenSense.
