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Β© 2026 OpenSimβ„’Previously Roaming eSIM. Same accounts. Same team.
OpenSimβ„’
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The OpenSim journal

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eSIM Research

Page 2

Original studies with downloadable data about travel connectivity, roaming costs and eSIM pricing.

All storiesEvents and festivalsTravel alertsDestination guidesFamily travelSetup and support
More topics βŒ„
Events and festivalsTravel alertsDestination guidesFamily travelSetup and supportData and callingeSIM ResearchConnectivity newsBuying guidesTravel guides

More esim research

Journal / OpenSim
Only three of ten checked travel eSIM providers publish permission, delivery, recipient login and plan control for a family setup
eSIM Research

Travel eSIM Family Setup Index: Can One Account Buy and Manage Plans for Everyone?

Five of 10 providers let you buy a plan for someone else, but only three explain the full handoff. Compare accounts, QR delivery, control and top-ups.

1 Sept 2026β†—
Only two of ten checked cruise lines clearly explain how passive phone activity can use a maritime cellular network
eSIM Research

Cellular at Sea Disclosure Index: What 10 Cruise Lines Tell Passengers About Roaming Charges

We checked 10 cruise lines' first-party guidance for Cellular at Sea charges, automatic connection, airplane mode, port boundaries and passive phone use.

22 Aug 2026β†—
None of the ten checked US carrier guides explains using a travel eSIM's cellular data as the home line's Wi-Fi Calling path
eSIM Research

Wi-Fi Calling Abroad Index: What 10 US Carriers Publish Before You Travel

We checked ten US carriers' Wi-Fi Calling abroad rules for calls, texts, setup and travel eSIM data. Compare every source-linked result.

22 Aug 2026β†—
Six of 10 cruise lines publish enough information to calculate a seven-night Wi-Fi cost
eSIM Research

Cruise Wi-Fi Price Index: What 7 Nights Online Cost on 10 Cruise Lines

See what seven nights of cruise Wi-Fi costs on 10 lines, which fares include access, which prices stay hidden, and when Roaming eSIM fits instead.

22 Aug 2026β†—
Only two of ten navigation apps explicitly document offline driving, walking, cycling and transit
eSIM Research

Offline Maps Travel Index: What 10 Apps Can Do Without Mobile Data

We checked 10 navigation apps for offline maps, fresh routes, driving, walking, cycling, transit and search. Explore the source-linked CSV.

21 Aug 2026β†—
Seven of nine translation apps publish an offline claim, but only four clearly name camera, voice or conversation offline
eSIM Research

Offline Translation App Index: What 9 Apps Publish Before You Travel

We checked what nine translation apps publish about offline text, camera and conversation modes. Compare the evidence in our source-linked CSV.

21 Aug 2026β†—
Six of ten ride apps document a route beyond SMS for account access
eSIM Research

Ride App Verification Index: Can 10 Apps Work With a Data-Only eSIM?

We checked phone verification, SMS, new-device login and recovery for Uber, Grab, Bolt and seven more ride apps. Explore the source-linked CSV.

21 Aug 2026β†—
All 15 airlines in the sample publish a free in-flight connection path
eSIM Research

In-Flight Messaging Index: What 15 Airlines Give Economy Travelers for Free

Compare free messaging and internet on 15 airlines, including account gates, aircraft limits, apps, source links and a downloadable dataset.

21 Aug 2026β†—
One of twelve intercity bus operators publishes both a numeric data allowance and an Mbps figure
eSIM Research

Intercity Bus Wi-Fi Transparency Index: What 12 Operators Tell You Before Boarding

We audited 12 intercity bus operators for Wi-Fi scope, price, login, limits, signal caveats and help. Explore the source-linked data before boarding.

20 Aug 2026β†—
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