Sorry for the wait, it's finals week, exam tomorrow. Dude get a case ASAP!! A naked iPhone will throw itself at the hardest surface around whenever given the chance. Starting with the iPhone 4, they built the damn things to break their own screens, I swear to God. Probably a deal with the companies that build cases and other accessories. Both. The phone will download only some of the content from the cloud, usually only the last month's worth of messages or so. I couldn't find anywhere to adjust this in the settings, but it won't download everything unless you scroll down your list of mail so far that it retrieves more. The amount of hard drive space that this takes up is trivial when you have several gigabytes of storage on your iPhone. And of course you can ask me all the questions your lil heart desires :).When the phone reads my gmail, has it downloaded all the gmail to my physical phone or is it reading it off the cloud?
Hold the home button down while at the "home screen" :)