Samsung galaxy j1 is samsung j series mobile is a very good price his screen size is a 4.3 inch and is a very light weight only 122 gm his 5mp auto focus rear camera and 2 mp front facing camera is bettry a 1850 mah very long lasting bettery is android version a 4.4.4 kitkat and processor is 1.2 ghz dual core ram is 512 mb and internal memory 4 gb expandable to 128 gb is mobile full the features