Samsung Galaxy J4 J400F Blue Fingerprint Sensor Flex Cable Replacement

What You’re Getting

This is a professional-grade replacement fingerprint sensor flex cable specifically for your Samsung Galaxy J4 (2018) models SM-J400F/DS and J400G/DS. The blue color matches the original design, and it’s the exact component that connects your fingerprint reader to the phone’s main board.

Why This Part Works

When your fingerprint sensor stops responding or gives errors, this flex cable is usually the culprit. We’ve tested this replacement to ensure it restores proper biometric functionality – that means your phone will recognize your fingerprint for unlocking and authentication again. Hundreds of repair technicians across South Africa keep this part in stock for Galaxy J4 repairs.

Installation Notes

Before you start, test the new cable with your phone’s board to confirm it works. Use an ESD strap to prevent static damage, and be gentle when handling – don’t bend the cable beyond 90 degrees. The installation requires opening your phone and carefully connecting the cable to both the fingerprint sensor and motherboard connectors.

Warranty & Support

This flex cable comes with six months of coverage against defects. If you run into issues, our team is here to help – email support@phoneparts.co.za or WhatsApp 063 193 2306. We ship free anywhere in South Africa, and over six hundred repair businesses rely on our components for their daily work.