Buyer's guide

Do I need a data eSIM or a real US phone number?

An honest answer. For some trips, data is all you need — and it's cheaper. For others, finding out you needed a real US number is expensive when you're already at the airport.

The short version

👉 Only need internet — maps, rideshare, WhatsApp, email — for a short trip? A data-only travel eSIM is enough, and usually cheaper.

👉 Need to open a US bank account, verify US apps (Zelle, Venmo, Cash App, Coinbase, Uber), take US calls, or keep a number long-term? You need a real US phone number — data alone can't receive those codes.

Side by side

The difference comes down to one thing: does it come with a phone number that can receive SMS and calls?

Data-only travel eSIM

Airalo, Holafly, and similar
  • Mobile internet the moment you land
  • Maps, rideshare, streaming, WhatsApp/WeChat calls over data
  • Usually the cheapest option for short trips
  • No US phone number
  • Can't receive US bank / app SMS codes
  • Can't make or receive normal US phone calls
Full setup

Real US phone number + data

A US prepaid line (what MeiSIM sells)
  • Mobile internet the moment you land
  • A real US 10-digit number — calls + SMS
  • Receives bank & app verification (Zelle, Venmo, Cash App, Coinbase, Uber…)
  • Works where VoIP numbers (Google Voice) get rejected
  • Keep the same number long-term
  • Costs a little more than data-only

Which one are you?

Find the scenario closest to your trip.

🏝️

One-week vacation, just want to stay online

Maps, Uber, posting photos, messaging home over WhatsApp. → A data eSIM is fine.

🎓

Starting university in the US

You'll open a bank account, verify a dozen apps, and give a number to your school and landlord. → You need a real US number.

💼

Business trip with US clients

You need a US number people can call you back on, and to verify work apps. → You need a real US number.

🏦

Opening a US bank / fintech account

Chase, Zelle, Venmo, Cash App, and Coinbase all text a code to a US number — and reject VoIP. → You need a real US number.

📱

Just need to verify one app once

A single SMS code for one signup, nothing ongoing. → A short SMS-verification number may be all you need.

We'll be straight with you: if you're visiting for a week and only need internet, buy the cheapest data eSIM you can find — you don't need us for that. We built MeiSIM for the harder problem: getting a real US phone number that banks and apps accept, ideally set up before you land. If that's you, we're the most direct way to do it.

Common questions

Is a data-only eSIM enough for the US?

For internet-only needs on a short trip — yes, and it's usually cheaper. You just won't have a US number to receive bank/app codes or take calls.

Does a data eSIM come with a phone number?

No. Data-only travel eSIMs provide internet only. There's no US number attached, so US banks and apps can't text you a code.

Why do banks and apps reject Google Voice / VoIP numbers?

Many US financial apps detect and block VoIP numbers to reduce fraud. A real carrier line (like ours) passes those checks where a virtual number fails.

Can I get both data and a US number in one eSIM?

Yes. A US prepaid line includes both. We deliver it as an eSIM QR by email so you can set it up before you fly.

Need the real US number?

Set it up before you land — bank codes and app verification working from day one.

See US number plans →
🛡️ If your eSIM doesn't activate, we refund you — no risk.