I don't modify mine and it works just fine. What are you even talking about there?And Siri is a disaster compared to Google Now. Not even close to working as well.
LAG LAG LAG. That is all Android does mostly on Samsung phones. But it is terrible. You have to turn off a ton of stuff to stop the lag, and save battery life. Gotta love it when I may need to make a 911 call, and I can't get into the dialer fast enough because my phone stops responding. Seen that a ton of times.
Google NOW just came out. Again, Siri was much better than anything Android HAD.