JC V1S/V1SE Headphone Speaker Flex Cable Detection Board FPC Sensor Flexible Cable for Phone True Tone Face ID Repair. Functions: 1. Support to repair phone x face ID & truetone problem caused by receiver FPC Failure.o require original receiver FPC. 2. Receiver FPC detecting adaptor is for working on JC V1S, which support repair 8-12 Pro Max full series face lD true tone problem caused by receiver FPC failure, no require original receiver FPC. JC V1S receiver flex cable detection board works with the JC V1S host, it's used to detect Phone true tone function,and repair Phone Face ID and true tone functions without original earpiece speaker with sensor flex cable. Models: 1. JC V1S/V1SE receiver FPC board. 2. JC earpiece speaker receiver FPC sensor flex cable for Phone