Replacement fingerprint sensor flex cable compatible with Samsung Galaxy J4 (2018) — models SMJ400F/DS and J400G/DS (Black). Flex cable color: Gold. Why you need this part Restores fingerprint recognition when the original flex cable is damaged, torn, or disconnected after a drop or screen . Saves time and money by enabling of the existing phone instead of buying a device. Matches the original connector layout for a correct fit with the Galaxy J4 (2018) Black model. Key benefits Precise compatibility: Specifically made for Samsung Galaxy J4 (2018) SMJ400F/DS and J400G/DS Black variants for reliable replacement. Functional restoration: Reestablishes secure biometric unlocking and any functions that rely on the fingerprint sensor connection. Slim, flexible design: Thin printed flex cable allows correct routing inside the phone without adding bulk. Goldcolored flex: Visual match for assemblies that require the gold flex cable appearance. Main attributes Functionality: Fingerprint sensor flex cable assembly for or replacement of the sensor connection. Compatibility: Galaxy J4 (2018) – SMJ400F/DS and J400G/DS (Black). Color: Gold flex cable (intended for use with Black device variant as specified). Material: Flexible printed circuit (FPC) suited for internal phone connections. Performance: Restores original connectivity and signal transmission between sensor and mainboard when correctly installed. Use cases a torn or creased flex cable after removing the display or during a screen replacement to restore fingerprint unlock. a phone that lost fingerprint recognition after impact or water exposure where the sensor and cable are intact but the flex is damaged. Refurbish used Galaxy J4 devices to full functionality before resale by replacing worn internal flex components. Installation notes Intended for experienced technicians or users comfortable with phone disassembly. Handle the flex cable carefully to avoid kinks or static damage. Power down the phone and remove the battery (if applicable) before installing. Use appropriate tools and follow guides for the Galaxy J4 (2018). If unsure, have the part installed by a professional service to ensure proper alignment and operation. What's included One fingerprint sensor flex cable (Gold) compatible with Galaxy J4 (2018) SMJ400F/DS and J400G/DS (Black). This replacement flex cable provides a directfit solution to restore fingerprint sensor function on the specified Galaxy J4 (2018) models when installed correctly.