Apple iPhone 4 Black Smartphone "constant watch manuals" Questions

...Also if you are in a weak 3G signal area this will drain the battery very fast as the phone is constantly switching between networks. The thing to watch for 3G is if the icon keeps disappearing. ...

... Does the HDD spinup, click a bit and get quiet, or do you hear it repeatedly spinning up, clicking constantly, starting and stopping?? These signs are not good and usually mean the drive controller ...