Business travel abroad? Stay connected on the cheap with eSIM, Google Fi and more

If you're traveling overseas, you now have multiple options for staying connected, They no longer cost an arm and a leg, and if you have a modern mobile device from Apple or Google, you don't have to remove your SIM card. Here's how these eSIM options work.
Written by Ed Bott, Senior Contributing Editor

Not that long ago, staying connected while traveling overseas involved a difficult set of choices. You could stop at a sketchy airport shop to pick up a prepaid SIM card and then (maybe) figure out how to forward your calls to the new temporary phone number. The alternative was to pay truly frightening roaming rates and risk receiving a four-figure mobile bill a few weeks after getting home.

Mere vacationers and business travelers on a budget simply turned off their cell phones at the beginning of the trip and checked in over email every time a Wi-Fi connection was handy.

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Thankfully, those days are long past. I'm about to leave on a two-week trip to Europe, and I have multiple connectivity options available to me. Best of all, none of them require losing touch with home or worrying about a surprise bill at the end of the trip.

I could still pick up a local SIM after landing in Madrid, but why should I bother, when I have three options available to me that don't require any extra effort?

  • My current U.S. carrier, Sprint, offers inexpensive phone calls, free text messages, and 2G (slow) basic data access while I'm overseas. For $5 a day or $25 a week, I can upgrade to 4G LTE speeds. That program is similar to what T-Mobile provides, and the weekly rate is less than half of the $10 "day passes" that AT&T and Verizon sell.
  • My Google Fi account offers full-speed LTE data access on the T-Mobile network as part of my normal $10-per-GB plan, at the same rate I would pay if I were just walking around my own neighborhood. (The maximum data charge for any billing period is $60, in addition to a $20-per-month access fee for the line.) On previous overseas trips, I've used my Google Fi device as a hotspot with excellent results, and I'll have it available as a backup device for this trip.
  • And then there are data providers like Ubigi, the customer-facing brand for the global Transatel network, which provides low-cost data-only access overseas by targeting devices that support eSIM capabilities. A prepaid package of 10 GB of mobile LTE data in Spain, good for 30 days, costs a mere $19 from Ubigi. That's more than enough of an allowance for a two-week trip, at a fraction of the weekly rate from Sprint ($50) or the daily rate from Verizon/AT&T ($140).

That eSIM option (the e stands for embedded) is the most intriguing one of all. Recent iPhones (iPhone X and later)  and cellular-enabled iPad models include eSIM support, as do the Google Pixel 3 and 4. The Arm-based Lenovo C630 laptop that I'm taking on this trip has a standard SIM slot and eSIM capabilities, as does the forthcoming Surface Pro X.

Setting up the eSIM on an iPhone XS for use with the Ubigi network is a multiple-step process.

First, go to https://cellulardata.ubigi.com/ and sign up for a free eSIM profile, which arrives in the form of a QR code via email. You can also install the Ubigi app, which will come in handy later.

Next, go to iPhone Settings > Cellular, tap Add Cellular Plan, and scan that QR code. (If you can't scan the code, you can copy and paste the activation code or type it in manually.)

With that step complete, you should see two cellular plans available, as shown below. (I've used a custom label for each line to make it easier to distinguish the two.)


Adding a cellular plan to iPhone involves scanning a QR code with an eSIM profile.

Now open the Ubigi app (or go to the mobile website at https://ubigi.me). Turn off Wi-Fi and turn off your local carrier's cellular data plan temporarily. After connecting to the Ubigi network you should be prompted to set up a new account, where you can purchase a data plan.

You can choose a recurring plan or, as I've done here, a one-off plan. After entering payment information and completing the transaction, I can check the plan's status any time using the app.


This one-off data plan costs a fraction of what a U.S. carrier charges.

From the Cellular Data page in the iOS Settings app, I can choose which connection I want to use as my default voice line and which to use for mobile data. The Allow Cellular Data Switching option means I can keep both data networks connected and let the phone decide which network is most appropriate at any given time. In that configuration, the iOS Control Center shows both networks.


Using cellular data switching, an iPhone can choose the stronger of two mobile networks.

Of course, counting on cellular coverage is always a bit of a gamble, thanks to dead zones caused by geography and the vagaries of network coverage. But for this trip at least, I feel fully prepared.

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