The humble SIM card has survived for quite a while, but it now finally looks like it’s on its way out. Why? Well, the eSIM, a much smarter technology, is here to save the day.
Before we dive into what an eSIM is, it might be helpful to understand what a SIM is. A SIM, which stands for “subscriber identity module,” basically contains the information that authenticates your identity to a carrier. In other words, the SIM card is what tells a carrier that you’re you — and without it, carriers wouldn’t know that you’re subscribed to their network, and