Qualcomm Wants To Replace eSIMs With iSIMs, Has the First Certified SoC

Here's an interesting bit of news out of Mobile World Congress: Qualcomm says the Snapdragon 8 Gen 2 has been certified as the "world's first commercially deployable iSIM (Integrated SIM)." ArsTechnica: What the heck is an iSIM? Didn't we just go through a SIM card transition with eSIM? We did, but iSIM is better than eSIM. We'll explain, but the short answer is that iSIM is the next step in the continual march to reduce the size of SIM cards. [...] eSIMs are still a chip taking up space on your motherboard, and that's not ideal if you want to squeeze every square millimeter of space out of a phone. The next shrinking step is iSIM -- an Integrated Subscriber Identity Module. Rather than a chip on the motherboard, iSIMs are integrated directly onto the SoC. SoC (system on a chip) integration is the technology that makes smartphones possible. Instead of a thousand little chips for things like the CPU, GPU, RAM, modem, and a bunch of other things, everything gets packed into one single do-everything piece of silicon. Individual chips require more space and power thanks to having to make motherboard traces to connect everything and having to deal with chip packages. Building everything in one chip, with the tiniest transistors you can muster, is the cheapest and most space-efficient and power-efficient way to do things, and now SIM cards are going to disappear into that big block of stuff. iSIMs will be measured in fractions of a millimeter, and as part of the SoC, they will continually shrink every year as chip process nodes hit ever-smaller nm measurements. It sounds like this is the endgame for SIM technology, and besides helping out phones, will be great for evermore space-constrained devices like smartwatches.

Read more of this story at Slashdot.