I had used samsung galaxy s duos s7562. it will hang for no matter, after using 1 year it battery condition is almost dead.
Its camera is also not that much good, it will not work with out hanging. once the mobile is get down all the parts including screen will comes out. its not such a strong phone.its will automatically switch off for no matter. its speaker also will not be much its is some what week. better not to buy it.