A SIM card, or subscriber identity module, is a small card in your cellphone that lets you place phone calls, send text ...

If you've just got your hands on a shiny new Sim card, congratulations. Switching your Sim (the chip that dictates your allowance) can unlock huge savings. Now comes the crucial step of activating it ...

You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...

Are you trying to switch phones or carriers? You might need to swap SIM cards for that, and we can understand how confusing this process can be if you haven’t done it before. Today we’ll show you ...

Unlike our phones, the SIM cards that connect them to a network have barely evolved over the last decade or so. This can sometimes mean you'll have trouble connecting to a network, even when the phone ...

Gently cleaning the SIM card and its tray can remove dust or debris that might be obstructing proper contact. Switching Airplane mode on and off can help reset network connections and prompt the ...

Most recent flagship smartphone releases are eSIM-compatible. Apple went one step further and completely removed the physical SIM card slot from the iPhone 14 in the US, a move it continued with the ...

If your new phone no longer supports SIM cards, or you don't want to use them anymore, you can convert to eSIM instead. I started my career with CNET all the way back in 2005, when the (original) ...