
We visited May 2026
DISCOUNT CODE ALERT: At bottom of page.
One of the least glamorous parts of travelling long-term is sorting data. Nobody dreams about airport WiFi, SIM cards, or standing in a queue after a 14-hour flight trying to explain to somebody why your phone suddenly won’t connect to anything.
But honestly, having reliable data changes everything when you travel as a family.
You need maps. Grab. Translation apps. Banking apps. Somewhere to check whether the ferry you booked has quietly changed ports overnight. Again.
Over the last few years we’ve tested loads of different eSIMs while travelling around Asia, and some were genuinely painful. One barely worked outside city centres. Another randomly stopped connecting halfway through a journey day in Thailand which was not ideally.
The one we’ve consistently stuck with is Billion Connect
Not because it’s flashy or because we enjoy talking about data plans, we really don’t, but because it’s been the easiest and most reliable one we’ve used.
We’ve been using it for the last three years now and, hand on heart, we’ve never had a connection issue with it.
That sounds dramatic for an eSIM review, but after enough ferry ports, delayed flights, border crossings and random apartment check-ins, you start appreciating boring reliability quite a lot.
The biggest thing for us is coverage.
A lot of eSIMs look great when you’re sitting in a café in a capital city. The problems usually start when you’re moving around properly. Ferries. Smaller towns. Long train journeys. Islands. Border crossings.
We’ve used Billion Connect across multiple countries in Asia and it’s just worked. No messing around switching networks manually. No spending an hour turning airplane mode on and off pretending that somehow fixes everything.
We normally preload the eSIM before we even leave for the airport. Then once we land, we switch the line on and we’re connected pretty much straight away.
That part matters more than people think.
We learned pretty quickly that if you leave it until arrival, there’s always a chance you accidentally connect to your normal roaming before you’ve sorted the eSIM properly. Which is exactly how people end up with horrifying phone bills after landing for “just five minutes”.
Preloading everything before the flight removes that stress completely.
It’s also just easier travelling with Jax when one less thing needs solving after a long journey. After overnight flights everybody is slightly delirious anyway. Usually one of us is trying to find the transfer, one is keeping track of bags, and somebody desperately needs within the next ten minutes or morale starts dropping fast.
Having data immediately means we can order a Grab, message accommodation owners, check directions or just sit quietly while pretending we’re all handling the travel day much better than we actually are.
We probably wouldn’t bother buying tiny one-country packages anymore unless you’re barely moving around.
We made that mistake early on trying to save money. Then you cross borders or add extra stops and suddenly you’re buying another eSIM every week anyway.
Regional plans have worked out far easier for us, especially around Southeast Asia where plans change constantly once you’re already travelling.
Also worth checking how much data you realistically use.
Jax downloads games and videos before long journeys now which helps massively, but between maps, uploads, video calls home and normal scrolling, we definitely use more data travelling full-time than we ever did living at home.
One thing we’ve learned is there’s nothing worse than running out halfway through a travel day and trying to top up while connected to patchy airport WiFi that keeps kicking you off every thirty seconds.
Not every travel purchase needs loads of thought, but good data honestly makes family travel smoother in ways you only notice once you’ve had bad data.
It’s one of those things where if it works properly, you barely think about it. Which is exactly what you want.
If you do end up trying Billion Connect, you can use our code JAXJAX for 10% off your order. You can use it as many times as you like as well, which is handy if you’re travelling long-term or bouncing between countries a lot.