If you’ve heard “eSIM in IoT enabling seamless connectivity for smart devices,” you might think it’s pure tech jargon. But the same technology making your smartwatch connect in 30 countries without swapping cards is exactly what solves a frustration every digital nomad knows: arriving in a new country and scrambling for connectivity that actually works.

eSIM — embedded SIM — was built for machines first. IoT sensors in shipping containers, connected cars, industrial monitors. Devices that can’t have someone pop open a tray and swap a plastic card every time they cross a border. They need to switch networks automatically, survive years in the field, and connect reliably without human intervention.

Turns out, people who work from Lisbon one month and Barcelona the next need the same thing.

Why IoT eSIM tech matters for travelers who aren’t robots

Traditional SIM cards lock you to one carrier. You land in Tokyo, your UK SIM either doesn’t work or charges £8/MB. So you find a konbini, buy a local SIM, register it, realise it’s data-only, can’t make calls, expires in 7 days, and doesn’t cover your weekend trip to Osaka properly because the cheap tourist SIMs throttle video. You do it all again in Seoul next month.

eSIM flips this. One profile can hold multiple operator credentials. The device (your phone, your router, your laptop) picks the best available network wherever you are. No plastic cards. No registration queues. No drawer full of expired SIMs from 14 countries.

ConnectPls runs on this same principle, but we ship you the device too, already configured, so it works the minute you land. The mobile router uses Cloud SIM technology (essentially eSIM at scale) that switches between operators automatically across 160+ countries. There’s also a backup physical SIM slot for redundancy, because when you’re working from a van in rural France, one network option isn’t enough.

“We managed to stay always connected while travelling around Europe, without having to buy SIM cards in every country and ending up with a handful of them with different balances we couldn’t use. Excellent support team.”
— Patrícia Reis de Magalhães, verified ConnectPls customer

How eSIM actually works (and why “portable WiFi” isn’t just a router)

An eSIM is a chip soldered into the device. Instead of inserting a physical card, you download a carrier profile over the air. The profile contains the credentials (keys, network configs) to authenticate with that operator. Multi-profile eSIMs can store several and switch between them, manually or automatically.

Cloud SIM takes this further: the device connects to a cloud platform that holds agreements with hundreds of mobile operators. When you cross from Spain into Portugal, the platform assigns the best local operator profile without you doing anything. For you, it just works. For an IoT sensor tracking a refrigerated truck through eight countries, it’s essential. For someone splitting time between a campervan in Europe and contract gigs in Australia, it’s the same benefit.

ConnectPls portable WiFi uses this tech, connecting up to 10 of your devices at once: laptop, phone, tablet, camera, whatever. The Plus Europe package is truly unlimited (no throttling, no fair-use caps) across about 70 “Group 0” countries including the UK, Ireland, France, Germany, Spain, Italy, Portugal, Netherlands, Nordics, Turkey, Canada, Mexico, Australia, and New Zealand. You’re not worrying about which operator or which border. You open the laptop and work.

Real scenarios: when subscription connectivity beats one-off rentals

If you’re in Japan for five days, honestly, renting pocket WiFi at Narita or buying a tourist eSIM for ¥3,000 probably makes sense. Short trips suit short solutions.

But if you’re doing three weeks across Spain, then a month in France, then back to Barcelona for a conference, then off to Portugal, the math and hassle shift. You’re either paying roaming fees every month, or buying a new local SIM every time (which means finding a shop, dealing with ID requirements, topping up, and having no service the day you cross the border). Or you’re juggling different pocket WiFi rentals with pickup/dropoff logistics in each country.

ConnectPls is a monthly subscription. You activate it for the months you’re travelling. Pause it when you’re home (if “home” even means one place for you). The device is included. We ship it to you in 2-3 working days across Europe, 4-5 in the UK, shipping included for most EU, UK, and US addresses. No upfront hardware purchase. No contracts. Cancel anytime, though there’s a £25 fee if you cancel a mobile-router plan within the first three months to cover shipping and return handling.

One of our customers runs a design studio from a motorhome, moving between France and Spain every few months. She needs stable connectivity for video calls, file uploads, and her partner streams in the evenings. Motorhome broadband isn’t about checking email. It’s about running a business from the road. Local SIMs would mean constant admin, and home-carrier roaming would be ruinous. A monthly plan that works across both countries, billed flexibly, with a device that handles ten connections, just fits.

Comparing your connectivity options: what actually costs less

Let’s be honest about what suits whom. There’s no one-size-all answer, and anyone claiming there is probably hasn’t shipped thousands of devices to actual travellers.

Option	Best for	Downsides	Real cost pattern
Home-carrier roaming	One-week holidays in EU (if your carrier includes it free)	Expensive or unavailable outside EU; throttled speeds; surprise bills if you exceed allowance	Free–£6/day, or bill shock
Local SIM card	Staying in one country for months; comfortable with local admin and language	Stops working at borders; requires local ID/address in some countries; single device only (phone)	Cheap per month once set up, but high time/hassle cost
Tourist eSIM or pocket WiFi rental	Short trips (under 10 days); one country	Per-trip cost adds up fast if you travel often; pickup/dropoff logistics; data caps or throttling common	£20–80 per trip depending on data
Subscription portable WiFi (ConnectPls)	Multi-country travel, frequent movers, van lifers, repeat business trips, families/groups sharing one connection	Monthly cost even if you don’t travel every single week (though you can pause); overkill for a single short holiday	Predictable monthly billing, device included, no per-country setup

The cheapest WiFi in France for a two-week holiday? Probably a local SIM or a short-term eSIM. The cheapest for someone who’s in France two months, Spain one month, then Portugal, with no fixed address and ten devices to connect? A monthly plan without commitment wins.

What “works anywhere” actually means (and where it doesn’t)

Does portable WiFi work anywhere? Technically, if there’s a mobile network, yes. Practically, the quality varies by country and technology.

ConnectPls covers 160+ countries, but the experience differs. In our Plus Europe “Group 0” countries (UK, Ireland, France, Germany, Spain, Italy, Portugal, Netherlands, Nordics, Turkey, Canada, Mexico, Australia, New Zealand), you get truly unlimited 4G with no throttling. Work all day, stream all evening, upload 50GB of photos. We mean unlimited.

In “Group 1” countries like Japan, China, India, Singapore, Thailand, or the UAE, you get 4G unlimited data but it may slow after about 5GB in a single day (which is still more than most people use). In “Group 2” countries like Brazil, Egypt, or Morocco, you get 500MB per day at 4G speeds, then it drops to 256kbps. Fine for messaging and maps, frustrating for video calls.

We’re transparent about this because we’d rather you know upfront than feel misled. If you’re spending three months in Japan, best pocket WiFi rental options or a local SIM might suit better for heavy daily use. If you’re doing two weeks across Europe, then a week in Tokyo, then back to Spain, the flexibility of one device and one bill probably matters more than squeezing every last gigabyte in Tokyo.

Why van lifers and long-term movers choose subscriptions

Van life across Europe means you’re in a different country every week or two. You need connectivity that doesn’t care about borders. You also need it to arrive before you leave, work the day you arrive, and handle multiple devices because your partner is on Zoom while you’re uploading drone footage and the kids are streaming.

ConnectPls ships the device to your current address (or a friend’s, or a coworking space, wherever you can receive post). It arrives configured. You turn it on when you land. It connects. That’s it. The Cloud SIM and backup physical SIM mean if one operator is weak in rural Provence, it switches. You don’t troubleshoot; you just work.

Billing is monthly and flexible. Travelling May through September? Run it those months, pause October through April if you’re stationary. No long-term contract. We’ve had customers do exactly this: activate for a six-month European road trip, pause over winter, reactivate for another trip next spring. Same device, same plan, no new setup.

What eSIM can’t do (and why you might still want the router)

Standalone eSIM for your phone is brilliant for solo travellers who mostly need phone data. But it’s single-device. If you’re travelling with family, or you’re a freelancer with a laptop, tablet, and backup phone, or you’re in a van with two people working, you’re still juggling multiple eSIM profiles or tethering (which drains your phone battery and limits simultaneous connections).

The portable WiFi router creates a local WiFi network. Ten devices connect to it. The router handles the eSIM/Cloud SIM side, switching networks as you move. Your devices just see “ConnectPls WiFi” and stay connected. One plan, one bill, everyone online.

ConnectPls also offers eSIM-only and physical SIM-only plans if you prefer that model. But for groups, families, or anyone with more than a phone, the router-included subscription is what makes multi-country travel actually manageable.

Frequently asked questions

Is a subscription plan actually cheaper than renting pocket WiFi each trip?

If you travel twice a year for a week each time, probably not. You’ll spend less on two short rentals. If you travel every month, or for extended periods across multiple countries, subscription billing works out cheaper and far less hassle. No pickup/dropoff, no per-trip fees, no surprise costs when you cross a border. You pay one predictable monthly rate for the months you’re travelling, and pause when you’re not.

Can I really pause and reactivate without penalty?

Yes. There’s no long-term contract. The only fee is £25 if you cancel a mobile-router subscription within the first three months (to cover shipping and return logistics), but pausing and reactivating later is free. We have customers who activate for summer, pause in winter, and pick up again next spring with the same device and plan.

What happens if I’m in a remote area with weak signal?

The Cloud SIM technology automatically tries multiple operators, and there’s a backup physical SIM slot for redundancy. In practice, if there’s any mobile signal at all, you’ll likely connect. In truly remote areas (deep mountains, far offshore), no portable solution (ours or anyone else’s) will work without satellite. But across populated and semi-rural areas in our coverage countries, the multi-operator approach means you’re far less likely to have zero signal compared to a single-carrier SIM.