Samsung Galaxy S4 is overall a good product it has all the high eng specification at the date of launch but in 2016 it has nothing to do.
My experience with S4 was not good. I have to go to service centre many times but the issue was not solved at the end of the day I have to sell the phone within 3 months at a lower price.
The camera was plus point and some gemic features.
I suggest dont waste your money go for any other devices like XIAOMI Redmi Note 3, Moto G4, Lenovo Zuk Z1 etc