I phone 4s small and nice grip for handling.
I would suggest ios 8.4.1 iphone 4s, dont upgrade ios 9 because 4s will run slow in ios 9 ios 8. perfect, its cheaper than I phone 5c, and 5s, black model is looking good.
TTThe rear facing camera is 8 mega pixel, battery talk time 14 hour, solid feel in the hand, network quad band, every features just perfect, siri is very useful, its agood idea to buy iphone 4s at less price and aprox all features, ilove the iphone 4s its a wonderful gadgets as well as a smartphone.