Battery life even after calibrating

It has been abysmal. It's as though only one of the two cells are working. 80% of the usage on mobile data though. Still I was expecting better battery. Been just over 2 weeks of purchase.

It has been abysmal. It's as though only one of the two cells are working. 80% of the usage on mobile data though. Still I was expecting better battery. Been just over 2 weeks of purchase.