SIM cards could soon be built into processors to save even more space

Every millimeter of space matters when you’re trying to build increasingly complex electronics into increasingly tiny packages, and the relatively spacious SIM card has long been an area of frustration for hardware manufacturers. Now, the chip design company ARM may have an answer: an integrated component called an iSIM that’s built into the same chip as the processor.
ARM says the iSIM will take up a “fraction of a millimeter squared,” whereas the current SIM standard &