Apple and Samsung are working together on standardizing SIM cards in mobile phones which would allow customers to switch mobile carriers by simply flipping a switch on the settings pages of their smartphone.
While Apple and Samsung are working on the hardware front for the initiative, AT&T, Orange, Vodafone, and others are working on the mobile carrier side.
Unlike existing SIM cards today, which require a slot for installation and stores information on them which can easily be stolen by removing it from the device, e-SIM (Electronic SIM) cards gives users much more flexibility as there is no longer a physical card required.
The new specifications for eSIM’s are being finalized now, but we won’t see the new technology in production use until later next year. I would assume that new iPhone 7 next year may include the new specification which meets the timelines for this technology.
If you’re an Apple user, you can start using technology similar to this today with the new iPad Air 2 and iPad Mini 3. These include Apple SIM which allows you to switch between carriers with ease and I would assume the iPhone 6S releasing this fall may also include this technology.