In-Display Fingerprint

In-Display Fingerprint is a diagnostic system app for Android devices equipped with Goodix fingerprint sensors, primarily found on Xiaomi, Redmi, and POCO models. This hidden developer tool lets you run technical tests on your fingerprint reader hardware directly from your device's service menu—perfect for verifying sensor operation and troubleshooting biometric authentication issues.

Accessing the app is straightforward. Simply dial *#*#6464#*#* on your device's keypad to enter the testing menu where In-Display Fingerprint's suite of diagnostic tools awaits. Once inside, you can trigger automated test sequences that validate PIN functionality, perform sensor resets, and execute fingerprint reading calibration routines. The app completes most tests in seconds and displays detailed technical feedback including coordinate data and image quality metrics, giving you precise insight into your sensor's performance.

This tool proves invaluable when your fingerprint authentication fails after screen repairs or replacements. If you're experiencing frequent false negatives—where your device refuses to recognize your enrolled fingerprints—or false positives where it responds to unintended touches, In-Display Fingerprint's calibration tests can pinpoint the exact problem. The app detects unresponsive screen zones, identifies calibration drift, and helps restore accuracy to parts of the display where recognition previously faltered.

Because In-Display Fingerprint ships as a system app on compatible devices, having the APK available is smart insurance. Xiaomi users who regularly remove bloatware sometimes accidentally delete this utility, and restoring it from an APK file avoids the hassle of factory resets or service visits. Keep it handy for those moments when fingerprint hardware misbehaves and you need immediate diagnostic access without visiting a repair shop.

The app works exclusively with Goodix sensors—if your device uses a different fingerprint technology, this tool won't help. It's also a power-user utility, not a replacement for standard fingerprint unlock or authentication features. Think of it as preventive maintenance and troubleshooting for your biometric hardware.

Whether you're diagnosing sensor problems after repairs, optimizing false positive detection, or simply verifying that your In-Display Fingerprint reader operates at peak performance, this developer tool delivers the technical insights you need. Requires Android 8.0 or higher.