The PuraSIM Blog
Guides, comparisons, and tips for staying connected while traveling: eSIM by destination, how to save on roaming, mobile compatibility, and everything you need before taking off.
Article
How to enable international roaming on Metro by T-Mobile: a step-by-step guide
If your Metro by T-Mobile international roaming is not working before a trip, this guide troubleshoots the problem in order: fi...
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Roaming
How to activate roaming on your cell phone? Complete guide
The roaming switch is in your phone's network settings, but turning it on without knowing how it works can be expensive. We'll ...
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Roaming
Is international roaming expensive? Why you were charged and how to avoid it
If you received an unexpected roaming bill, it's not because you did something wrong: it's because your home operator charges y...
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Article
Roamless vs eSIM: what it is, how much it costs, and how it compares to PuraSIM
Roamless is an eSIM app with data, calls, and SMS in over 200 destinations and a rechargeable, non-expiring credit model. We re...
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Article
eSIM Kolet: what it is, how it works, and how much it costs (reviewed in 2026)
Kolet is a French travel eSIM with institutional funding and a one-time installation model with mandatory in-app top-ups. We re...
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Article
Which iPhones have eSIM? Complete Guide by Model
From the iPhone XS (2018) onwards, all models include eSIM, although many users have never activated it. This guide explains wh...
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Article
How to Delete an iPhone eSIM: Quick and Error-Free Guide
The step-by-step guide to deleting an eSIM from an iPhone via Settings, what to do when the profile gets stuck on "Activating,"...
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Article
T-Mobile USA eSIM: what coverage you actually get and when a different option makes sense for your trip
T-Mobile does offer eSIM, but it's designed for customers opening a permanent line in the United States, not for those travelin...
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Article
Buy prepaid eSIM: honest comparison guide
Comparative guide to buying a prepaid eSIM: the five objective criteria that predict whether it will work for your trip (covera...
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Article
Hotspot: what it is, how it works, and when it's best to use it when traveling
We explain what a hotspot is, how it works step-by-step on Android and iPhone, how much it can cost on a trip, how it compares ...
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Roaming
International roaming service: what it is, how it works, and when an eSIM makes sense
International roaming allows your cell phone to continue working when you leave your country, but how you're charged depends on...
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Article
How to activate international roaming: step-by-step guide
If roaming isn't working for you right now, this guide gets straight to the point: the switches to check, in what order, and wh...
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Article
Local SIM or eSIM: What It Is and How It Works for Travel
What a local SIM is, how it differs from an eSIM, and how the complete process works to have mobile data at your next destinati...
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Article
eSIM International Roaming: What It Is and How It Works
International roaming depends on agreements between operators that do not always cover your destination. We explain what it is,...
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Article
What Is eSIM io and How Does an eSIM Work: A Step-by-Step Guide
"eSIM io" is just a brand name: all travel eSIMs work the same way. This guide explains step-by-step how to purchase, install, ...
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