mayank.saini , via OnePlus 6T , Jan 18, 2021 : Hi. I have a Oneplus 6T bought on July 2019. Till November 2020 Battery status was 80% (in op diagnostic app), and in Jan 2021 it is 74% (serious loss) This device is under 1 year extended warranty plan. So my question is that will battery replacement will be free or do I have to pay for this.?