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

There are plenty of great dual-SIM Android phones on the market, but which should you purchase? We've tested the lot, and ...

As mentioned in the quick answer section above, the Samsung Galaxy Z Fold 5 has dual-SIM support, but it comes in two flavors. The US version comes with one physical nano-SIM card slot and an eSIM.