My samsung note 5 is one and half years old now I'm getting 3 to 4 hrs screen on time its normal or i have to change my battery?
Are you connected to the internet and have a lot of apps using internet like social networking apps? If that's correct, those apps help in draining your battery. But 3 to 4 hours is still ridiculous, I think. You should take your phone to a service center, replacing the battery is a good idea. Please stick on using the original battery.