I don't know if it's just me but playing now with my new 3G 64Gb it's something like I noticed is the speed of the system. I noticed also the graphics when playing is so much smoother. I just compared it to the pre-ordered wifi. I don't know, maybe it is just me.. I got my 3G yesterday Quick add.. The wifi is so stable. It is always on full bar. 3G signal is same as my iPhone!