Thinking of hopping on a new contract, but lacking that smaller SIM standard that the iPhone 5 will be packing? You'd best pick up one of these, then. UK carriers, including Three and Vodafone, are already stocking up on these nano-SIMs, and they're also prepping these tiny adapters to ensure the new cards will work across all their devices. These will convert a nano-SIM to both micro and standard sizes, so we'd advise picking one up the same time you visit the phone