Very easy step. Take you bil and mobile box. Go and tell you problem. They have no write to take money. It's free of cost. They fix fingerprint sensor.
If you go to your service center and get it fixed you will get free replacement warranty. Don't worry, they have no written charges, everything is free. If there is no physical or water damage.
Sometimes the product pre- damaged. Sorry for your loss. I feel your pain bro.
Try updating your firmware. Dial *#2663# and tap on TSP FW Update (General). Wait until it updated, make sure you have a strong internet connection. This method fixed my Galaxy M35 device's fingerprint sensor and there is no more problem since past 4 months.
As per your concern, you have already done the possible troubleshooting steps and the issue remains unresolved, we kindly request that you visit our service center. Our technical team will be able to inspect your device physically and provide you with detailed information and assistance.
