I am using samsung primo duos mobile.This mobile was not bad.using a small amount of data can store in this mobile is the problem.This phone is a dual sim phone.A daily Buisness man can’t use this phone.The problem is less data space.The person who had addicted in social media app cant use this set.The factor that led is less space and cant download more app also.This is a 3G sim set.This mobile in the case of internet .it is very slow and range is the one of the problem.downloading more app this phone get hanged.The person who has taking only in important case can use this mobile.and also downloading more app is not possible in this mobile.ishared my true experience with you .you can choose now that buy or did not buy it is your choice.