When asking about specifications, we were told to expect a MediaTek processor, microSD card slot, rear-facing camera and a SIM card slot.

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The European Telecommunications Standards Institute (ETSI) has confirmed the winning design of the fourth form factor of the SIM card is the design submitted by Apple for the Nano-SIM.

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Once you unlock your phone you can insert almost any SIM card you want (the iPhone3 and 4 series take a different size SIM so be careful), foreign or domestic, prepaid or not.

FORBES: Unlocking Your iPhone Could Save You Big, At Home And Overseas UPDATE