This phone is 4g but this phone is not perfect set because this set weight more than another 4g sets but battery life is good .Its back camera is good but front camera is not good. Its sound quality is good only not so good.In this set not any heat issue .It is not support Samsung official music app but uses Google music app.This device is not KNOX enabled and not have theme store. In this set ram 1gb less than another set in this price value .