I created eSIMs.ca to help Canadians understand mobile connectivity without having to decode carrier terminology, roaming policies, or technical documentation on their own.
From Portugal to the United States and Canada
I was born and educated in Portugal and graduated from ISCTE – University Institute of Lisbon in 1999 with a degree in Telecommunications and Computer Engineering. I began my career working in network and field infrastructure, gaining hands-on experience with the systems and network operations that keep people connected.
Portugal
Graduated and began working in telecommunications, network operations, and field infrastructure.
United States
Moved to the United States and spent approximately four years working in telecommunications and network infrastructure.
Canada
Moved to Canada around the winter of 2009 and continued my career across landline, fixed-network, wireless, and mobility services.
Experience Behind the Guides
I have worked in telecommunications since 1999 and have 27 years of professional experience as of 2026. My career has included different technical and field-based roles across landline services, network operations, field infrastructure, wireless networks, and mobility. For the past 12 years, my work has focused on wireless and cellular infrastructure.
Living and working in Portugal, the United States, and Canada—and travelling to more than 40 countries—has also given me first-hand experience with mobile networks, roaming, SIM cards, and the challenges of staying connected across borders.
What eSIMs.ca Is About
eSIMs.ca is an independent Canadian resource for understanding eSIM technology, mobile connectivity, and international roaming. It is designed to help readers make choices that fit their device, carrier, destination, and travel plans.
- eSIM setup and activation guidance for Canadian mobile carriers
- Travel eSIM guides written for Canadians travelling abroad
- Canadian carrier roaming compared with travel eSIM alternatives
- Connectivity guidance for visitors travelling to Canada
- Independent eSIM provider reviews and comparisons
- Device compatibility, installation, activation, and Dual SIM guidance
- Troubleshooting for activation, network, and mobile-data problems
- Free tools for checking compatibility, comparing plans, and estimating roaming costs
How I Test and Research eSIMs
I combine first-hand eSIM testing with detailed provider and carrier research. When I personally test a service, I document the location, device, network, and measurements. When guidance is based on research rather than direct testing, I make that distinction clear.
My testing can include stationary use, walking, commuting, driving, and train travel. I use tools including Ookla Speedtest, Opensignal, field-test diagnostics, and CellMapper while keeping individual measurements and real-world mobility observations within their proper evidence limits.
A Separate Perspective from eSIM Travel Guide
I also created eSIM Travel Guide, a separate publication for an international audience with stronger coverage of travel to and from the United States. eSIMs.ca remains focused on Canadian readers, Canadian carriers, Canadian-dollar comparisons, travel beginning in Canada, and connectivity for visitors arriving in Canada.
Independent, Evidence-Based Guidance
My professional infrastructure work and my independent eSIM testing are separate. The information and opinions published on eSIMs.ca reflect my own travel use, documented measurements, professional knowledge, and research. They do not represent or imply endorsement by any current or former employer.
Advertising and any clearly disclosed commercial relationships do not determine which providers, plans, or services I recommend.
Help make eSIMs.ca more useful.
If you found something outdated or want to share your own eSIM experience, I’d be glad to hear from you.