Replacement fingerprint sensor flex cable for Samsung Galaxy J4 (2018) — compatible with SMJ400F/DS and J400G/DS. Color: Black. Restore fingerprint recognition without replacing the entire rear assembly. This directfit flex cable connects the fingerprint sensor to the J4 mainboard, making it an efficient part for damaged or nonfunctional fingerprint connections. Key benefits Restores functionality: replaces a faulty or torn fingerprint flex cable to regain secure, reliable fingerprint unlocking and authentication. Costeffective : cheaper and faster than replacing the entire back cover or fingerprint module. Direct compatibility: specifically designed for Galaxy J4 (2018) SMJ400F/DS and J400G/DS models to ensure correct fit and connection. Discreet color match: black finish blends with original internal components for a neat . Key attributes Function: fingerprint sensor flex cable replacement for Samsung Galaxy J4 (2018). Compatibility: SMJ400F/DS and J400G/DS models only. Color: Black. Form: flexible cable designed to connect the fingerprint sensor to the motherboard in its original location. Use: intended as a component for restoring fingerprint hardware connectivity. Typical use cases a phone that no longer detects fingerprints after a drop, water incident, or during a screen/back cover replacement. a torn or creased flex cable discovered during device disassembly or battery/service replacement. Use in a service or by a DIY technician refurbishing Galaxy J4 (2018) units to working condition. Notes for installers Compatible specifically with the listed Galaxy J4 (2018) models; confirm your model number (SMJ400F/DS or J400G/DS) before . Professional installation or careful DIY experience with small mobile components is recommended to avoid damage to adjacent parts. Handle with care to prevent kinks or contamination of the connectors during installation. This replacement flex cable provides a straightforward way to restore fingerprint sensor connectivity on the compatible Galaxy J4 (2018) models while keeping repairs efficient and costeffective.