A SIM card stores your subscriber identity data, which is needed to connect to a carrier's network. But do you still need one in 2025?

The sim card that exists inside your phone is what connects your phone to your specific cellular network. For most of us we might not even realize it’s there. When we get a new phone from our ...

The Universal Subscriber Identification Module, known as USIM and SIM, is evolving. The traditional plastic card-based SIMs have been shrinking in size, and now, embedded SIMs or eSIMs are being ...

Just insert a different SIM card and you can connect to a different cell network. For years, some phones supported having dual SIM cards.

Physical SIM Card vs. eSIM: What Sets Them Apart and Which Should You Choose? These two ways of connecting your phone to a cellular network are very different.