Iphone 4 return question?

[Hing]

I brought my at the apple store and i want to know if i can return it without the box or reciept?

 

[studio¹³¹]

they probably can look up purchase date from the serial -- they did this on a ipod nano i returned from xmas. youll definitely need the box + all accessories + docs though to even have a chance at refund...