At a Glance: The iPhone 4S vs. older iPhones
Tuesday, October 4, 2011 - 17:00
in Mathematics & Economics
Apple unveiled a faster, more powerful iPhone on Tuesday called the iPhone 4S. It's not the radical update -the iPhone 5 - that some people had expected. The 4S will be available on October 14. Consumers can begin pre-ordering the new device beginning on Friday.