FPC, full name Flexible Printed Circuit board, that is, flexible printed circuit board, it is made of soft and flexible materials, widely used in a variety of devices, especially in mobile phones play an important role. Applications of FPC in mobile phones include lightweight circuit connections, such as display wiring, as well as the use of complex circuit structures, such as PDAs. With the development of mobile phone technology, the demand for FPC is also growing, especially products with low height, small pitch, multi-function and excellent electromagnetic compatibility. FPC connector such as the connection between the LCD display and the driver circuit, the mainstream products are mainly 0.4mm pitch, but 0.3mm pitch products are also becoming popular. In the future, the FPC connector may be integrated into the phone and merged with other components. Board-to-board connectors are moving toward smaller pitches and heights, such as 0.35mm or even smaller. I/O connectors, as the key to signal transmission inside and outside the phone, are pursuing size reduction and standardization, and the Micro USB connector finds a balance between standardization and customization. The development trend of SIM card and T-FLASH connectors is to increase shielding and thinning, while battery connectors are tending to miniaturization and high reliability. Camera Socket connectors provide electromagnetic shielding for easy maintenance, while connector pluggability and electromagnetic compatibility requirements are also improving. Overall, FPC is playing an increasingly important role in mobile phone components and will continue to evolve to meet the needs of technological advances.