RL-071B RELIFE 4in1 Optical Fingerprint Calibrator, High Recognition Rate Solve Mobile Phone Screen Fingerprint Failure. Description 1.4in1 fingerprint calibration 2.Solve the problem of screen fingerprint failure after the mobile phone is replaced 3.Optical fingerprint calibrator 4.Suitable for HW/MI/OP/VI to solve the problem of fingerprints under the screen or poor input 5.High recognition rate Real machine test 6.Solve the problem of screen fingerprint failure after the mobile phone is replaced 7.4in1 fingerprint calibrator, no disassembly calibration, convenient and fast random