Can someone clarify what a SIM card actually is and what it does for my cell phone? I'm also curious about what kind of information a SIM card usually holds. Additionally, should I be worried as a parent if my teenager has another SIM card?
1 Answer
A SIM card essentially acts as your phone’s identity to the mobile network. It allows you to make calls, send texts, and use mobile data. If a phone has a second SIM card, that means there’s a second phone number and plan involved. As a parent, it's understandable to be concerned—it might be a way for them to keep conversations private.
If my teen adds a second SIM card, does that change the ID that shows up on my home internet log? We usually see which devices are connected.