mobile

Hi,

I can't use my phone without plugging it into a charger and socket and when I remove my phone from charging, it turns off itself and I can't open anymore so I decided to buy new battery(im not sure if this is original) since I thought it just a battery problem and now I can use my phone even if it is not plugged into a charger but the problem now is my phone shows more battery % but after several minutes, it turns off and it shows that the battery is at 0% so meaning it drops to 0%.