It's an old Huawei device bought in 2015. Well it's battery lasted long but now it has started swelling. The reason could be from past couple of days I am using it in combination with power bank which is then connected with charger and this power bank causes voltage fluctuations when charging from external power source
I am thinking about buying new zong wingle from mobile shop if they are willing to sell it for 2000 (that's the official price).