The SIM card has important information stored on it, such as your unique identifier that connects you to a specific network, your phone number, and an authentication key unique to your SIM card.

[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 wireless terminal he got from AT&T, but as he expected, it was locked to the device. Unfortunately, the terminal has no function ...

Through connected vehicles, IoT applications, and next-generation 5G networks, the evolution of SIM technology underscores ...

It connects to mobile networks in exactly the same way – the key difference is that this is part of your ... Whereas before you’d be sent a new SIM card, everything happens automatically instead.