Battery life still draining way too fast
I've had my Samsung j3 for about 2 and a half years now and until recently all was well.
One day, i noticed that the battery was draining unusually fast and despite trying everything, including buying a new battery and charger cable, contacting Samsung support and performing a full factory reset, i still have the same problem.
I did notice however, that my old charging cable should have 5 ‘pins' in the phone connection tip, yet it only had 4.
Could this have been the original culprit? Can it be fixed? Or is it just time for a new phone?
Thanks in advance.