Instagram is good social site but this is not support on every phome it is also need too much memory ram to run this application smoothly.
I have samsung s duos and the ram of this phone is 512 mb and when I install this app in my phone this is totaly hang and this consume too much data when it ia running and any photo and video download automatically and then open and every image download if you want or not. And hamg the phone when this is running and automaticaly force stop and decrease the quality of the picture. And not have any new feature which is ordinary and cosume too much battery power and heat the phone.