AT&T and Verizon together control about 70 percent of all wireless subscriptions in the United States. Currently, most mobile phones use SIM cards, which contain unique identifying information about a user and are inserted into the devices so the phones can function. PhotoThe eSIM technology, which was introduced in early 2016, is embedded in mobile phones and other devices so that people do not need SIM cards anymore. Advertisement Continue reading the main storyThe eSIM technology is supported by gadget makers including Apple, Google and Microsoft, as well as several wireless carriers globally and in the United States. For companies like Apple, eSIM technology would free up storage space in devices to use for other technologies like bigger processors and batteries.

Source: New York Times April 20, 2018 19:39 UTC