Why the Fingerprint Sensor Fails After a Pixel 7 Pro Screen Replacement

Pixel 7 Pro Screen Replacement

If you’ve replaced your Google Pixel 7 Pro screen and suddenly discovered that your fingerprint unlock no longer works—or worse, that the fingerprint option has completely disappeared from your settings—you’re not alone. Many users experience this after a screen replacement, but fortunately, there’s a clear explanation and a reliable fix.

At Phone Chek Brampton, we often see customers walk in after an unauthorized repair where their display works fine, but the fingerprint reader doesn’t. Here’s why that happens and how our technicians fix it the right way.


1. Why the Fingerprint Reader Stops Working After Screen Replacement

The Pixel 7 Pro uses an under-display fingerprint sensor (UDFPS), which is tightly calibrated to the phone’s original display and fingerprint module.
If a technician replaces your screen but fails to transfer the original fingerprint sensor or doesn’t recalibrate a new one properly, the system will not recognize any fingerprint hardware. As a result, the fingerprint option disappears completely from Settings → Security.

Common reasons for this issue include:

  • The original fingerprint sensor was not reused during repair.
  • The new screen is not a genuine Google display.
  • The new fingerprint sensor wasn’t calibrated using official Google tools.
  • Improper flex cable connection between the fingerprint sensor and the motherboard.

2. How Our Technicians at Phone Chek Brampton Fixed It

When our technician at Phone Chek Brampton received a Pixel 7 Pro with this exact issue, here’s how the repair was performed:

  1. Carefully removed the old damaged screen.
  2. Extracted the original fingerprint sensor from the old display.
  3. Installed a new original Google Pixel 7 Pro screen.
  4. Transplanted the fingerprint sensor into the new display housing.
  5. Verified the connection and booted the device.

Once the original fingerprint sensor was properly installed, the fingerprint unlock option instantly reappeared in the Security settings — working just like before.


3. What If the Original Fingerprint Sensor Is Damaged?

If the original fingerprint reader is cracked, damaged, or missing, the repair process requires recalibration using Google’s official online tool.

Technicians use the Google Pixel Fingerprint Calibration Tool:
https://pixelrepair.withgoogle.com/udfps

This tool securely calibrates the new fingerprint sensor to match the specific phone’s hardware ID and display configuration.
It’s an essential step to restore fingerprint functionality on a Pixel 6, 7, or 8 series device when a new sensor is installed.


4. Why You Should Choose Phone Chek Brampton for Pixel Repairs

At Phone Chek Brampton, we ensure:

  • Use of genuine OEM screens for Google Pixel devices.
  • Original fingerprint sensor transfer during every screen replacement.
  • Full calibration and testing before handing the phone back.
  • Warranty on all repairs.
  • Transparent service and same-day turnaround.

We’ve helped hundreds of Google Pixel owners in Brampton restore their phones to perfect working order — with fingerprint sensors fully functional after repair.


5. How to Avoid Fingerprint Reader Issues in the Future

  • Always ask your technician if they’ll reuse your original fingerprint sensor.
  • Confirm that they use Google’s official calibration process if a new sensor is installed.
  • Avoid cheap aftermarket displays — they often cause fingerprint mismatch errors.
  • Choose a trusted repair shop like Phone Chek Brampton that specializes in advanced Google Pixel repairs.

Book Your Google Pixel Repair in Brampton

If your fingerprint reader isn’t working after a screen replacement, don’t panic — it can be fixed. Visit Phone Chek Brampton today for a professional repair.

Pixel 7 Pro Screen Replacement

Address: 143 Clarence Street, Unit #12, Brampton, ON
Phone: 905-226-1789
Service: Google Pixel Screen & Fingerprint Repair
Website: https://phonechek.ca
Fast, reliable, and backed by a warranty.

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