As we reported last night, Apple this afternoon confirmed that the SIM-free iPhones the company is selling via its stores in the UK, France and Canada are being sold truly unlocked and can be used with your choice of provider, including providers outside of the country in which your iPhone is purchased. Does iPhone work with any SIM card or carrier worldwide? iPhone 3GS works with SIM cards and iPhone 4 works with micro-SIM cards from compatible carriers, including prepaid cards. Non-GSM carrier networks do not support iPhone. Availability of 3G data depends on carrier support for the radio frequencies used by iPhone. Where can I get a SIM or micro-SIM card? You can get a SIM or micro-SIM card from any carrier offering iPhone plans.How do I get started using iPhone to place and receive calls? First, insert an activated SIM or micro-SIM card from a compatible carrier. Then connect your iPhone to your computer and open iTunes to complete set up. Do I need an iPhone-specific service plan?iPhone may require large amounts of data usage. Please contact your carrier to ensure that you have an appropriate service plan to support iPhone. Do I need to commit to a long-term contract for my iPhone?Buying a commitment-free iPhone from the Apple Online Store allows you choose your own carrier and change carriers at any time. iPhone may also be available at a reduced initial price with a contract directly from your wireless carrier. Does iPhone support tethering?Yes. You can share the fast 3G connection on your iPhone with your Mac or PC and connect to the Internet from just about anywhere