In-Display Fingerprint Scanner Flex for OnePlus Nord 4

Has the fingerprint scanner under your OnePlus Nord 4 screen stopped working, or does OxygenOS say 'sensor not available'? Almost always the optical sensor flex under the panel is the fault. You swap it by gently heating the screen loose — a deep repair because the sensor sits under the AMOLED panel.

Specifications

• Compatible models: OnePlus Nord 4
• Type: in-display fingerprint scanner with flex cable
• Sensor: optical, under the panel
• Connector clicks onto the motherboard
• Compatible with OxygenOS re-enrollment
• Requires screen removal
• No software pairing required

Symptoms of a faulty part

• Fingerprint scanner unresponsive
• OxygenOS reports 'sensor not available'
• Scanner animation does not appear under the screen
• Setup error 'cannot save fingerprint'
• Device falls back to PIN-only unlock

Installation

Difficulty: 🔴 Hard (screen/soldering)
Estimated time: 70 min
Tools needed: Phillips PH00, plastic spudger, suction cup, tweezers and a heat gun or iOpener.

Frequently asked questions

Do I need to re-enroll my fingerprints?
Yes. A new optical sensor has its own ID, so you re-enroll your fingerprints in Settings > Security.

How deep is this repair?
Fairly deep. You need to heat the screen loose to reach the sensor, so plan for new screen adhesive for reassembly.

Does this flex fit every Nord 4 variant?
Yes. The optical sensor and its flex are identical across all regional variants of the OnePlus Nord 4.