I am using this phone from 2 years and it is my first smartphone.
Battery: battery back-up is good but when getting old the power of battery started to decrease, which happens with every smartphone.
Screen: as my opinion samsung every display is verry good. but I will be happy if it’s screen would super amoled display.
User frendly and look: it is a slim that I wanted and not too much heavy to use what makes it user friendly. one last thing that samsung mobile started to hang after few years if the is not daily cleaned.