Online retailer Play.com has started offering unlocked, SIM-free versions of Apple's brand-new iPhone 3GS-- but at the staggering price of £900 for the 32GB model. Both the 16GB and 32GB are listed in ...
What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...