You may already know about SIM cards for cellular data, those little microchips that slide on trays in or out of smartphones. But the future of connectivity is eSIM cards, and that future is now.

Holafly’s eSIM unlimited data plans cover you when you travel. They’re tailored to your destinations. And they keep your iPhone connected in many countries, hassle-free, while also keeping costs down.

You’re probably familiar with SIM cards, the little microchip cards that you can slide into your cellular device via a tiny tray on the side. But do you know that virtual SIM card technology — eSIM — has evolved to replace the clumsy SIM card? eSIM makes changing up your data plan for travel and other needs easier than ever before.

Summer! That time of year where you stay in somebody else’s home via Airbnb, crank up their air conditioning and wear a sweater in the house, even though it’s 90 degrees outside. Aka the season where you leave the limitless comfort of your home Wi-Fi, to venture out into the world using just a restricted cellular plan.

Summer revives that old pioneering spirit of hardship, the bare essentials of living, and of making do with whatever you have. And just like the original English and Spanish invaders of the modern-day United States, you’ll have to do without the comforts of on-demand GPS and automatic app updates.

Today we’ll see how you can stretch your meager data allowance while traveling.

If you’ve ever made calls or used data across international borders without checking on your service plan specifics first, that’s likely a mistake you won’t make again. It’s called international roaming — and when your U.S. SIM card connects with a mobile network in a foreign nation, you usually start accruing new charges. Those fees typically start at just a couple bucks, but they can go through the roof quickly if you aren’t careful.