I recently switched to an older phone for traveling and realized I don’t have a SIM card for it. But I was wondering—can you still call someone without a SIM card, like through some app or service? I'm not asking about Wi-Fi calling via WhatsApp or Zoom, more like regular calls to real numbers. Anyone tried it?

In a similar situation, I had to figure out a workaround fast because I didn’t want to buy a new SIM just for a short trip. The good news is, there are indeed ways to make standard calls without a SIM card https://esimplus.me/blog/can-you-call-without-a-sim-card-a-complete-guide offers a clear breakdown of several reliable alternatives that let you place real calls using apps and VoIP services. The best part is, some of these options work even when you're traveling internationally. You just need an internet connection. I ended up using a virtual number solution tied to a calling app and had no trouble making and receiving calls like normal. It saved me both money and hassle, especially during airport pickups and hotel bookings. Definitely worth checking out if you're going SIM-free temporarily.