good day everyone. I have just purchased a new galaxy nexus with a 4.0 ice cream sandwich system. My question is this: On my previous phone( the original droid) I used to use memory cleaners, cache cleaners, System optimizers and app Killers. I was never really sure if I was getting any benefit from these tools. Is it worth my time to put these tools on my new nexus? Are they beneficial in being used with the new nexus? I am starting to lean towards the thought that the more you screw with a system the less performance you get. thank you for taking the time to read And consider this general question.