SAMSUNG the mobile giant released the successful series of galaxy next version galaxy s3 which is meant for humans , this Samsung galaxy s3 can understand the face signs and it will lock if you went to sleep ,It comes with 4.8inches screen and 1GB samsung eco green ram.and you can use upto 64 gd external microsd chip as external storage.8 mega pixel cam comes with flash ,android ice cream sandwich ,1.4 quad core cpu is useful for multi tasking and un interrupt game playing .