A:Answer It really depends on a lot of factors. such as screen brightness, data connection, background apps, etc. Replacement batteries are easy to find on Amazon. I just replaced my battery with an Anker brand one from Amazon and it's perfect. You battery will degrade over time so it's best to replace them about once a year.
I also started using something called Package Disabler from the Play Store. It wouldn't recommend it unless you're going to research how to use it properly because you can mess up your phone with it. Between it and hte new battery, I'm averaging about 7.5-8hrs of screen on time at around 25% brightness, sometimes going as high as 9 if I lower the screen brightness to about 15-20%.