Samsung Galaxy J1 ( 4G) is small screen phone only 4.5 screen on this phone, phone is very good for handling.but screen not full hd.Design and looks of this phone is avrage .Processer of this phone is avrage On this phone 1.3GHz quad core processer is not very fast.On this phone 1gb ram with 8gb internal and expand 128gb by using sd card.Camara of this phone not good back camara 5mp is avrage but front camara is very bad.main problam of this phone is hanging .when I play game and mutitasking phone is hang and off. .some time phone heated when I use 4G internet.Battery of this phone is okk on this phone 2050MAh battery .Overall this phone not for havey user only for simple and normal user.price of this phone is low but some havey problam on this phone.