With every passing day smartphone companies are trying new ways to reduce the sizes of devices and one such attempt made by Apple was by removing headphone jack. All these efforts are being made to free up space for more RAM or bigger batteries.
Now a step forward to these efforts, chip designer ARM claims to find a way by designing a new component called an "iSIM" that aims to pack SIM cards into the same chip as the processor. As compared to current SIM cards which tend to be about 12.3mm x 8.8mm in size, this new 'iSIM' technology claims to take up a mere fraction of a millimeter squared.
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The space freed up with this effort could allow for larger batteries, even thinner phones, additional RAM capacity or simply more powerful mobile hardware overall down the line. This could also decrease manufacturing cost of SIM cards from tens of cents per card to single-digit cents.