Insights

Guides, tips, and how-tos from SpeedySim

21 Jul 2026

How-to

What is an eSIM and how does it work?

An eSIM is a digital SIM built into your phone. Here's what it is, how it works and how it compares to a physical SIM card for travel.

Polina Gankina

eSIM, physical SIM, or roaming: which should you use?

21 Jul 2026

Enlightenments

eSIM, physical SIM, or roaming: which should you use?

eSIM, physical SIM or roaming: here's how the three ways to get mobile data while travelling compare on cost, setup and convenience.

Polina Gankina

Is my phone eSIM compatible? Check your device

21 Jul 2026

How-to

Is my phone eSIM compatible? Check your device

Not every phone supports eSIM. Check your exact device model instantly, and see which iPhone, Samsung Galaxy and Google Pixel phones generally support it.

Polina Gankina

21 Jul 2026

How-to

eSIM QR code not working? How to fix "code already used" and other errors

If your eSIM QR code won't install, here's why it happens and how to fix "code already used", expired or unreadable codes.

Polina Gankina

eSIM QR code won't scan? Camera and lighting fixes

21 Jul 2026

How-to

eSIM QR code won't scan? Camera and lighting fixes

If your camera won't pick up the eSIM QR code at all, try these quick scanning fixes before assuming the code itself is broken.

Polina Gankina

21 Jul 2026

How-to

eSIM "Activation Failed" error: what it means and how to fix it

Seeing "Activation Failed" while installing your eSIM? Here's what causes it and the fixes that resolve it most of the time.

Polina Gankina

"Can't Add Cellular Plan" error: causes and fixes

21 Jul 2026

How-to

"Can't Add Cellular Plan" error: causes and fixes

Getting a "Can't Add Cellular Plan" error while installing your eSIM? Here's why it happens and how to resolve it.

Polina Gankina

21 Jul 2026

How-to

"Unable to Complete Cellular Plan Change" error: how to fix it

"Unable to Complete Cellular Plan Change" usually shows up right after installing an eSIM. Here's why, and how to get past it.

Polina Gankina

eSIM shows signal but "No Internet Connection"? Here's the fix

21 Jul 2026

How-to

eSIM shows signal but "No Internet Connection"? Here's the fix

Your eSIM shows full signal bars but data won't load? Here's why that happens and how to get connected.

Polina Gankina

Dual-SIM conflicts: fixing eSIM and physical SIM issues together

21 Jul 2026

How-to

Dual-SIM conflicts: fixing eSIM and physical SIM issues together

Calls, texts or data going to the wrong SIM when you're running an eSIM alongside a physical SIM? Here's how to fix the most common conflicts.

Polina Gankina

Why your eSIM QR code expired (and what to do about it)

21 Jul 2026

How-to

Why your eSIM QR code expired (and what to do about it)

eSIM QR codes don't stay valid forever. Here's how the 365-day activation window works and what to do if your code has expired.

Polina Gankina

No service after landing abroad? Quick troubleshooting checklist

21 Jul 2026

How-to

No service after landing abroad? Quick troubleshooting checklist

Landed and your eSIM isn't connecting? Work through this quick checklist before assuming something's wrong with your plan.

Polina Gankina

21 Jul 2026

Enlightenments

Best eSIM for Japan in 2026

A practical guide to choosing a Japan eSIM in 2026. Covers how much data you actually need, what to expect from coverage outside the cities and the installation steps to follow before your flight.

Polina Gankina

21 Jul 2026

Enlightenments

Best eSIM for Thailand in 2026

A practical guide to Thailand eSIMs in 2026. Covers island and ferry coverage, data usage by trip type and the setup steps that prevent the most common problems.

Polina Gankina

21 Jul 2026

Enlightenments

Best eSIM for Europe travel in 2026

A practical Europe eSIM guide for 2026. SpeedySim's Europe plan covers 42 countries and territories including the UK, Switzerland, Türkiye and the Western Balkans. Also covers cross-border behaviour, plan size by trip length and dual SIM setup.

Polina Gankina