Author
Roc Chow
Founder, YonoSIM
Founder of YonoSIM. Has personally travelled with eSIMs across Japan, Korea, the US, the UK, Thailand, and the Canada-US Windsor–Detroit corridor. Writes about mobile connectivity for travellers who don't want roaming fees.
Areas of expertise
- Travel eSIMs
- International roaming
- iOS + Android dual-SIM setup
- Cross-border connectivity (Windsor–Detroit, Japan, Korea)
Latest guides by Roc Chow
419 guides, newest first.
- Korea Travel Guide 2026: Visas, K-ETA, T-money, Naver Map, Taxis, Rentals & Phrases· 2026-07-27
- Hong Kong Travel Guide 2026: Visas, Octopus, Red Minibus 有落, Star Ferry, Taxis & Phrases· 2026-07-27
- Taiwan Travel Guide 2026: Visas, EasyCard, YouBike, THSR, Scooters, Taxis & Phrases· 2026-07-27
- Singapore Travel Guide 2026: Visas, SGAC, Hawker Chope, SimplyGo MRT, Taxis & Phrases· 2026-07-27
- Japan Travel Guide 2026: Visas, Payments, Trains, Buses (整理券), Taxis, Rentals & Phrases· 2026-07-26
- eSIM Refund Policies Compared (2026): Every Major Provider, Side by Side· 2026-07-25
- Why eSIMs Are Notoriously Hard to Refund (and How YonoSIM Fixed It)· 2026-07-25
- eSIM 退款政策全对比（2026）：主流供应商横向比较· 2026-07-25
- 为什么 eSIM 出了名的难退款（以及 YonoSIM 如何解决）· 2026-07-25
- eSIM 환불 정책 비교 (2026): 주요 업체 총정리· 2026-07-25
- eSIM은 왜 환불받기 어려운가 (그리고 YonoSIM은 어떻게 해결했나)· 2026-07-25
- eSIM-Rückerstattungsregeln im Vergleich (2026): Alle großen Anbieter nebeneinander· 2026-07-25
- Warum eSIMs bekanntlich schwer zu erstatten sind (und wie YonoSIM es gelöst hat)· 2026-07-25
- eSIM返金ポリシー比較（2026年版）：主要各社を横並びで検証· 2026-07-25
- eSIMが返金されにくい理由（そしてYonoSIMがどう解決したか）· 2026-07-25
- Polityki zwrotów eSIM porównane (2026): każdy większy dostawca, jeden na jednego· 2026-07-25
- Dlaczego eSIM-y są tak trudne do zwrotu (i jak YonoSIM to naprawił)· 2026-07-25
- Detroit This Week from Windsor (Jul 23): Seven Straight Tigers Nights and a Flo Rida Show· 2026-07-23
- eSIM Santorini vs roaming: cuánto cuestan los datos en Grecia (2026)· 2026-07-22
- Best Holafly Alternative for Japan (2026): Metered 5G vs Unlimited· 2026-07-21
- 韓國自由行網路完全指南 2026（台灣／香港旅客）· 2026-07-20
- 韓國電子入境卡 e-Arrival Card 填寫教學（台灣／香港 2026）· 2026-07-20
- iPhone 綁 T-money 卡不了？Apple Wallet 韓國交通卡完整解法· 2026-07-20
- 韓國 eSIM 要不要 010 號碼？三分鐘決定樹（台灣／香港）· 2026-07-20
- 韓國網卡 PTT／Dcard 熱議 5 款實測 2026（台灣／香港）· 2026-07-20
- Does a Travel eSIM Change Your Phone Number? (2026)· 2026-07-19
- Will WhatsApp Work with a Travel eSIM? (2026)· 2026-07-19
- iMessage & FaceTime with a Travel eSIM — Will They Still Work? (2026)· 2026-07-19
- Keep 2FA & Verification Codes Working While Travelling (2026)· 2026-07-19
- iPhone Dual SIM Setup for Travel (2026)· 2026-07-19
Showing 30 of 419. See all guides.