Guides
How to Top Up an eSIM Without Reinstalling It
Running low on data abroad? How to add data to the eSIM already on your phone, where to do it, and how to track usage so you top up in time.
Oct 19, 20266 min read
HelloSIM Blog
Blog
Travel tips, eSIM guides and the latest news from HelloSIM.
Guides
How to Choose a Travel eSIM: What to Compare
Eight things worth comparing before you buy a travel eSIM, from the local networks behind a plan and when validity starts, to top-ups, support, refunds and payment.
Oct 19, 20267 min read
Guides
How Much Mobile Data Do You Need for a Trip?
A practical way to estimate travel data: three usage profiles, what each app really costs you in data, worked examples and habits that make a plan last longer.
Oct 19, 20266 min read
Guides
Global eSIM: One Plan for Multi-Country Trips
How a global eSIM works, which trips it suits, what happens to your data on layovers, and when a regional or country plan is the better fit.
Oct 19, 20266 min read
Guides
Landing Abroad: Your First Hour Online With an eSIM
What to do between touchdown and the taxi rank: switch to your travel eSIM, turn on roaming for the right line, book a ride, message home and fix a missing signal.
Oct 19, 20266 min read
Guides
eSIM vs Roaming: How to Avoid Roaming Charges Abroad
How carrier roaming is usually billed, where surprise charges come from, and how a prepaid travel eSIM plus a few phone settings keeps your data costs fixed.
Oct 19, 20267 min read
Guides
eSIM QR Code: How to Scan, Install and Keep It Safe
What an eSIM QR code contains, where your HelloSIM code comes from, how to scan it without a second screen, what to do when it fails and why to keep it private.
Oct 19, 20266 min read
Guides
eSIM vs Physical SIM: The Differences Explained
An eSIM and a SIM card do the same job in different ways. Here's how they differ in form, switching, security and travel use, and when each one makes sense.
Oct 19, 20266 min read
Guides
eSIM Not Working Abroad? 12 Fixes to Try
No signal, or bars but no internet? Work through these 12 fixes for a travel eSIM that won't connect, in the order that solves most problems fastest.
Oct 19, 20266 min read
Guides
10 eSIM Myths Travellers Still Believe
Will an eSIM change your number, break WhatsApp or start ticking the day you buy it? Ten common eSIM myths, and what actually happens when you travel with one.
Oct 19, 20266 min read
Guides
eSIM Glossary: APN, EID, SM-DP+, Roaming and More
The eSIM and mobile data terms travellers actually run into, explained in plain English and grouped by when you'll meet them: checking, buying, installing and arriving.
Oct 19, 20267 min read
Guides
eSIM for Students Studying Abroad
Starting a semester abroad? How a data eSIM covers your first weeks, what data-only means for a student, and how to stay in touch with home without running out.
Oct 19, 20266 min read
Guides
eSIM for Road Trips Across Borders
Live navigation, border crossings and long stretches between towns: how to plan mobile data for a road trip abroad, when a regional plan helps and why offline maps still matter.
Oct 19, 20266 min read
Guides
eSIMs for Family Trips: Getting Everyone Online
One eSIM per phone, sized to each person: how to plan data for parents, teenagers, younger children and grandparents, and set it all up at home before the holiday.
Oct 19, 20266 min read
Guides
eSIM for Digital Nomads and Remote Workers
How remote workers use eSIMs as a safety net for unreliable Wi-Fi, how to match plans to the way you move, and why you should install the next country's eSIM early.
Oct 19, 20266 min read
Guides
eSIM for Business Travel: Stay Online From Landing to Meeting
How business travellers use an eSIM to get online on landing, keep their work number reachable, handle video calls on the road and keep expenses tidy.
Oct 19, 20266 min read
Guides
eSIM Data Plans Explained: How Travel Data eSIMs Work
Data amount, number of days, coverage area and top-ups: how travel eSIM data plans are built, when the clock starts and how to pick the right size.
Oct 19, 20266 min read
Guides
Does My Phone Support eSIM? How to Check
Which phones typically support eSIM, three quick ways to check yours (including the EID and *#06#), how to confirm it is unlocked and the exceptions that catch people out.
Oct 19, 20266 min read
Guides
Dual SIM With an eSIM: Keep Your Number While Using Travel Data
How to run your home SIM and a travel eSIM side by side, which line should do what, and the settings that keep your number reachable without roaming charges.
Oct 19, 20266 min read
Guides
Data-Only eSIM: Calls, WhatsApp and Your Phone Number
A data-only eSIM gives you internet abroad but no new phone number. Here is how calls, WhatsApp and SMS codes work, and how to set up dual SIM properly.
Oct 19, 20267 min read
Guides
eSIM on Google Pixel and Other Android Phones
How to add a travel eSIM on a Google Pixel or another Android phone, where each brand hides the setting, and how to set data and roaming so only the eSIM line roams.
Oct 19, 20266 min read
Guides
5G eSIM: What You Need to Use 5G Data Abroad
5G abroad needs three things to line up: your phone, the local network and your plan. Here is how to check each one, switch 5G on and know what to expect.
Oct 19, 20266 min read
Guides
Pocket Wi-Fi Router vs eSIM for Travel
A pocket Wi-Fi router connects several gadgets, but it must be carried, charged and returned. How it compares with an eSIM on each phone, for solo trips and groups.
Oct 19, 20266 min read
Guides
Prepaid eSIM: How Pay-As-You-Go Travel Data Works
Pay once, use the data, top up if you need more: how prepaid travel eSIMs work, why they avoid surprise bills and who they suit best.
Oct 19, 20266 min read