Field notes
From the desks of Roamingly.
Travel eSIM guides, evergreen explainers, and the occasional letter from the desk. Written by people who buy a lot of data plans.
Best eSIM for Bali
A practical Bali eSIM guide for Denpasar, Canggu, Ubud, Uluwatu, Nusa Penida, and remote work, including what to check before buying.
02 Jun 2026 · 2 min read
Best Thailand eSIM
The best Thailand eSIM depends on whether you are staying in Bangkok, island hopping, or working remotely. Compare live Thailand plans.
02 Jun 2026 · 2 min read
Airalo vs Roamingly
Airalo and Roamingly both sell travel eSIMs, but they solve different problems. Here is how to choose between marketplace browsing and AI-guided buying.
02 Jun 2026 · 3 min read
Best eSIM for Japan 2026
A practical comparison of Japan eSIM options for Tokyo, Kyoto, Hokkaido, remote work, and short trips, with live Roamingly catalog prices.
02 Jun 2026 · 3 min read
The traveller's eSIM guide to Japan (2026)
Network coverage, regional reality, and the cheapest live plans for travelling Japan with an eSIM. Tokyo to Hokkaido, no kiosk queues.
13 May 2026 · 4 min read
Thailand eSIM: data plans for Bangkok, Phuket and beyond
How to buy the right Thailand eSIM in 2026 — Bangkok metro coverage, Phuket island reality, and live plan prices straight from our catalog.
12 May 2026 · 3 min read
What is an eSIM and how does it actually work? (2026 guide)
A plain-English explainer of how eSIMs work — at the hardware, software, and traveller level. With FAQs, network compatibility, and the gotchas nobody tells you.
11 May 2026 · 6 min read
Why we built Roamingly: a $400 roaming bill in Reykjavik
A short letter from the founder. The Iceland trip that became a $400 surprise, and what we built to make sure other travellers don't get the same one.
10 May 2026 · 3 min read