Fingerprint unlocking with the "se 3D Protective Film Samsung Galaxy S23 Ultra Privacy" can work, but there are some important considerations:

- The protective film must be compatible with the fingerprint reader. TPU or hydrogel protective films must have a maximum thickness of 0.17mm to be compatible.
- It is crucial to check the condition of the protective film to ensure that there are no scratches, air bubbles or dust that could interfere with the reading of the fingerprint sensor.
- It is recommended that you re-register your fingerprints once the screen protector has been installed to optimise recognition.

If the protective film is properly installed and meets these criteria, fingerprint unlocking should work correctly.