Xiaomi India — handset given for repair under insurance

Address:

Mumbai City, Maharashtra, 400089

Handset was for repair under insurance with a small issue of mic in the handset due to spillage of some water on handset phone was functioning properly except for mic in the phone but when i gave it for repairs under insurance they are saying mother board is damaged. There is no chances that water would have got inside mother board as my phone had scratch guard and some water droplets were there on scratch guard.