Samsung galaxy core 2 is far better then core because I was using that phone more than two years that phone has 1 GB rem and internal 4 GB memory but very useful and long life battry in this phone I have installed 1/2 GB games and apps and phone dosent hang that is the plus point for me so service needed and zero cumplains and that was my best phone for 2 years reacently I just buy J7 the bap of J series core 2 has many features so friends buy this phone and J7 also you will be in benifite thankyou samsung for making this phones