What can i download on my phone as fas as a download manager that will take the place of Safari? Meaning since i still have no USB cable and did get my phone recovered at ATT. What can i download from Google to direct to my phone to be able to get a cache cleaner or something to clean up my phone. Also is it at all possible to downgrade from 4.2.1 to 3.1.3 on from my phone without itunes?