My s2 was perfect before until yesterday. The wake up time of my phone became super slow. I knew that it's normal for s2 to have about 1-2 s wake up lag, but my phone literally took at least 5s to wake up from sleeping mode since yesterday. What's wrong with my phone.. I won't be worrying if it is always like that, but it just suddenly became very very slow.. ps I tried to reinstall go launcher and go locker and uninstall some apps, but i didnt see any improvements.