Xiaomi India — mi 3s prime pathetic service

Address:	380051
Website:	www.mi.com

Screen of the phone started flickering suddenly without any incident. When i visited service center located in ahmedabad, they said it is screen damage and this will not be covered under warranty. How will i know if there is any internal damage in screen. I can not see even a single crack scratch or anything on phone. I use it delicately. However where is it mentioned that any internal issues will not be covered in warranty. They want me to spend 2200 for screen replacement. If i only had to pay for any internal issues in phone then why did the company provide warranty.