I got a samsung galaxy s4 second hand recently, used only for 3 months. The feature I like about it was that the screen was feather touch. Dont even touch the screen and can do most of the things. But still, its so laggy. Its got a 1.7 ghz processor but too slow as its old. Camera quality is good also in dim light conditions. Gaming is impossible on this phone. In this generation, its not available and so dont try to buy it second hand, so laggy and so irritating