I've been trying to use this URL that apparently creates an Instagram account. However, it returns asking for my login. I thought you didn't have to have an account to register the account, no?
http://instagram.com/api/v2/push/register/?platform=XXX&device_type=XXX
Returns:
{"status":"fail","message":"login_required"}
If this is the login to Facebook, is there another API that registers using your phone number or email?