The difference between roaming, pocket WiFi, local SIM, and eSIM
Every time someone asks "how do I get internet abroad" they get four different answers. Here's what each one actually means:
Roaming Your home carrier extends your plan to other countries. Convenient - zero setup. Expensive - often $10-15/day or brutal per-MB charges if you're not careful. Fine for a 2-day trip if your plan includes it. Terrible for anything longer.
Pocket WiFi A small device you carry that creates a personal hotspot using a local SIM. Multiple devices can connect. Requires charging, carrying an extra thing, and usually picking it up/returning it at the airport. Works well for groups or people with lots of devices. Annoying for solo travelers.
Local SIM card You buy a physical SIM at the destination, swap it into your phone. Usually the cheapest option per GB. Downsides: you lose your home number while it's in, you need to find a shop, and if you're visiting multiple countries you need multiple SIMs or a regional one.
eSIM A digital SIM built into your phone. You buy a plan online, scan a QR code, activate it. No physical card, no swapping, no shop. Your home SIM stays active in parallel (on most phones), so you keep your number. Works across multiple countries on a single plan.
None of them is universally "the best." But one of them is usually the right fit for your specific trip. What's your upcoming trip?
Posted Jun 23, 2026, 10:35 AM UTC