Updated 3:04 p.m. &bull; iPhone 4S Teardown &ndash; iFixit rips into an iPhone 4S the day before it goes on&nbsp; sale. And yes, there&rsquo;s only 512 MB of RAM in there. Also Apple&rsquo;s New IPhone Sells Out at U.S. Carriers and Apple: We&rsquo;re Gonna Need a Bigger iPhone Order &bull; iPad and iPhone Users Get [...]