Hi there! I understand that you've forgotten your 4-digit PIN on your Samsung Galaxy S20 FE 5G, and currently, only the fingerprint sensor is working. If you've already tried multiple times and the lockout timer keeps increasing, performing a factory reset may be a viable solution.
Here's a step-by-step guide on how to perform a factory reset on your Samsung Galaxy S20 FE 5G:
1. Turn off your phone completely.
2. Press and hold the Volume Up button and the Power button simultaneously.
3. Release both buttons when the Samsung logo appears on the screen.
4. You will see the Android recovery menu. Use the Volume Down button to navigate to the "Wipe data/factory reset" option.
5. Press the Power button to select this option.
6. On the next screen, use the Volume Down button to highlight the "Yes" option and press the Power button to confirm.
7. Wait for the factory reset process to complete. This may take a few minutes.
8. Once the process is finished, you'll be taken back to the recovery menu.
9. Use the Volume Down button to navigate to the "Reboot system now" option and press the Power button to confirm.
10. Your phone will reboot, and it should now be restored to its factory settings.
Please note that performing a factory reset will erase all data and settings on your phone, so it's important to back up any important files beforehand. Additionally, after the reset, you'll need to set up your device again from scratch, including reconfiguring your accounts and reinstalling apps.
I hope this helps! Let me know if you have any further questions.