Battery problem
As soon as you get the 20% warning, either charge it, or place it in Low Power Mode, and do nothing else except texts and music. You might be lucky to get 60 minutes at the most (or the least), out of it.
I would never let my phone get down that low, well, I did once, but it was to prove battery draining doesn't exist. I put it on the charger either before it hits 20% or shortly after it goes below 20%.
Never allow the battery discharge below 10%.
But why this is happens because its only 2 months i have bought
It's happening because you are allowing the battery to discharge too far.
Battery problem
It is designed to.
This is to prevent permanent damage to your battery.
My iphone x shuts down in 6-8% battery i want to know why this is happening
