I have purchased Xiaomi Redmi Note 3 phone 3 months ago for my father. He is very gentle with his mobile phone. Now the phone is stuck up on headphone mode even after I plugged out my headphones. I am unable to talk on call unless use the speaker. I went to service center in Rajkot. They told me that this problem does not cover up in warranty. they have to change motherboard for that. further they included that it is a physical damage. but I am pretty sure that this is not a physical damage. Phone does not have any single scratch. I am feeling cheated now.