This mobile is very good.This is very simple to use.This mobile sumsung Galaxy j1( 4g) is a lowest price.This mobile battry backup is very good.Its front camera and back camera is very good.It is a 4g spot mobile phone.update softwear for this phone is good work. Apps unistal and uninstal will not use a large time. I use internet in this phone very fast.i advice to all use this phone.It has full of bugget.Its charging is very fast.It is very easy to use and its tuch is very good to use.Its gold colour is very beautyfull.apply to all use this phone. Its bluetoth is very fast and verson4.1 is very high.