Product overview Special fingerprint corrector for phones — a general tool for isooptic fingerprint calibration designed for optical fingerprint sensors. Restores normal fingerprint recognition reliably and quickly, addressing common sensor issues after software updates, restarts, or repairs. Key benefits (why you need it) Fast: completes the calibration in about one minute, minimizing device downtime. Fixes common failures: resolves problems such as missing fingerprints after restarting, inability to enter (authenticate) normally, and failure to unlock after fingerprint entry. Technician-ready: a general-purpose isooptic calibration tool suitable for phone repair and maintenance workflows. What it does (function) Performs optical fingerprint correction and isooptic calibration to bring sensors back to expected performance. Recalibrates the sensor so stored fingerprints are recognized and normal unlocking/authentication is restored. Compatibility and use Intended for phones that use optical in-screen or rear optical fingerprint sensors. Described as a general tool for isooptic fingerprint calibration; suitable across multiple phone models with optical fingerprint modules. Performance and operation Single-step operation that completes in approximately one minute. Designed to be effective for common post-restart and post-repair fingerprint recognition failures. Practical use scenarios Phone repair shop: After replacing a screen or fingerprint module, use the tool to recalibrate the optical sensor so customer fingerprints unlock the device normally. After a system restart or software update: Quickly restore fingerprint recognition when stored fingerprints disappear or fail to authenticate. Field service/technician visits: Fast on-site correction to get devices unlocking and authenticating correctly without extended troubleshooting. Notes Purpose-built for optical fingerprint correction and isooptic calibration on phones. Follow device-specific repair and safety procedures when using the tool.