Pantaohuaes Fingerprint Sensor Flex Cable for Galaxy J4 (2018) SMJ400F/DS J400G/DS (Color : Blue) A direct replacement flex cable that restores the fingerprint sensor function on Samsung Galaxy J4 (2018) models SMJ400F/DS and J400G/DS. This component is intended for technicians and experienced DIYers who need a reliable, compatible part to fix an unresponsive or damaged fingerprint sensor. Key benefits Restores fingerprint unlocking: Replaces a damaged or nonworking flex cable to bring back biometric unlocking and home button responsiveness. Exact fit for listed models: Designed specifically for Galaxy J4 (2018) SMJ400F/DS and J400G/DS to match original connector layout and mounting points. Saves time and cost: Repairing the sensor cable is faster and more economical than replacing the whole device. Visible color coding: Blue flex cable makes identification during easier and helps prevent installation errors. What it does and why you need it Solves common issues such as no fingerprint recognition, intermittent response, or a disconnected sensor caused by drops, wear, or previous removal. Allows you to the phone to full functionality without replacing unrelated components. Key attributes Functionality: Replacement fingerprint sensor flex cable that reconnects the fingerprint module to the mainboard. Compatibility: Specifically compatible with Samsung Galaxy J4 (2018) models SMJ400F/DS and J400G/DS. Size and fit: Designed to match the original equipment dimensions and connector positions for a proper fit and secure installation. Material and build: Manufactured as a flexible printed circuit (flex cable) with connector ends and solder points compatible with the original assembly. Performance: When correctly installed, restores original fingerprint sensor responsiveness and accuracy. Use cases / applications DIY phone : a torn or pinched flex cable after opening the phone to restore fingerprint unlock without replacing the entire sensor assembly. refurbishment: Keep as a stock replacement part to customer Galaxy J4 (2018) units with touch and fingerprint issues. Afteraccident recovery: Use to phones that lost fingerprint function after being dropped or partially disassembled during other repairs. Installation notes and recommendations Intended for users experienced with mobile phone repairs. Requires disassembly of the phone, proper alignment of the flex cable connectors, and potentially heat or adhesive removal tools. If you are not comfortable opening your device, seek professional installation to avoid further damage. Ensure the device is powered off and battery disconnected before attempting replacement. Package information Brand: Pantaohuaes Product: Fingerprint sensor flex cable Compatible models: Samsung Galaxy J4 (2018) SMJ400F/DS, J400G/DS Color: Blue Compatibility and verification Confirm your device model number (SMJ400F/DS or J400G/DS) before ordering to ensure compatibility. Inspect the replacement part upon receipt to verify connector type and mounting points match your original flex cable prior to installation.