デュアルSIM
旅行中のデュアルSIMおよびデュアルeSIMの設定方法。現地の番号を使いながら、自宅の番号を有効に保ち、仕事用と個人用の回線を切り替える方法を紹介します。
- ガイド·7分で読了·
Samsung Galaxy S26 & S25 eSIM ガイド (2026): Dual SIM、eSIMの枚数、および旅行時の設定
Galaxy S26はeSIMに対応していますか？はい：nano-SIM + eSIM、およびdual eSIMに対応しています。旅行用eSIMの追加方法、元の電話番号の維持、ローミング料金の回避、および一般的なエラーの解決方法について解説します。
- ガイド·8分で読めます·
iPhoneで3つの電話番号を持つことはできますか？ いつものSIM + 旅行用eSIM + アメリカの電話番号 (2026)
はい。iPhoneでは2つのSIM回線を同時に利用でき、アプリでアメリカの電話番号を使えば3つ目の回線として追加できます。自宅のSIM + 旅行用eSIM + アメリカの電話番号の設定方法を、ステップごとに解説します。
- テクノロジー·7分で読める·
スマホはeSIMを何個持てる？保存と有効の違い
多くのiPhoneは8つ以上のeSIMを保存でき、同時に有効化できるのは2つまで。Androidは機種次第。スマホが持てるeSIMの数を解説します。
- Guides·12 min read·
Should You Remove Your Primary eSIM When Traveling? Usually No — Here's the Safer Setup (2026)
Should you remove or delete your primary eSIM when traveling abroad? Usually no. Learn the difference between disabling and deleting, how to avoid roaming charges, and the safest dual-SIM setup for travel.
- ガイド·7 約分で読めます·
データ専用eSIM｜海外で通話・SMSは使える？
データ専用の海外eSIMでも大丈夫？海外旅行中に通話・SMS・WhatsApp・iMessage・メインSIMがどう連携するかを解説します。
- ガイド·8分で読めます·
# iPhoneにはいくつeSIMを保存できる？8個以上保存、2個同時利用、TripoSIMなら3回線も可能 (2026)
XS以降のすべてのiPhoneは8個以上のeSIMを保存できますが、同時に使えるのは2個までです。iPhone 18 Proまでの全モデルの制限と、TripoSIMを使うことで3つ目の回線を追加する方法をご紹介します。
- Comparisons·11 min read·
Best eSIM for dtac Users Traveling Abroad (2026): Better Than dtac Roaming?
Looking for the best eSIM if you use dtac at home? Compare dtac roaming and eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Guides·14 min read·
Do You Need a Local Phone Number When Traveling? When You Do — and When You Don't (2026)
Do you really need a local phone number when traveling? Usually no. Learn when a data-only travel eSIM is enough, when a local number matters, and the best setup for calls, OTPs, WhatsApp, and bookings.
- Comparisons·11 min read·
Best eSIM for Singtel Users Traveling Abroad (2026): Better Than Singtel Roaming?
Looking for the best eSIM if you use Singtel at home? Compare Singtel ReadyRoam and DataRoam vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for CelcomDigi Users Traveling Abroad (2026): Better Than CelcomDigi Roaming?
Looking for the best eSIM if you use CelcomDigi at home? Compare CelcomDigi roaming passes and eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for Maxis Users Traveling Abroad (2026): Better Than Maxis Roaming?
Looking for the best eSIM if you use Maxis at home? Compare Maxis roaming passes and eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·10 min read·
Best eSIM for U Mobile Users Traveling Abroad (2026): Better Than U Mobile Roaming?
Looking for the best eSIM if you use U Mobile at home? Compare U Mobile roaming and eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·12 min read·
Best eSIM for Yoigo Users Traveling Abroad (2026): Better Than Yoigo Roaming?
Looking for the best eSIM if you use Yoigo at home? Compare Yoigo EU roaming and international roaming vs a travel eSIM, learn how to keep your number, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for Freedom Mobile Users Traveling Abroad (2026): Better Than Freedom Roam Beyond?
Looking for the best eSIM if you use Freedom Mobile at home? Compare Freedom Roam Beyond travel eSIM and roaming-included plans vs a travel eSIM strategy, learn how to keep your number, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for Personal Users Traveling Abroad (2026): Better Than Personal Roaming?
Looking for the best eSIM if you use Personal at home? Compare Personal roaming and eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for Claro Users Traveling Abroad (2026): Better Than Claro Roaming?
Looking for the best eSIM if you use Claro at home? Compare Claro roaming and local Claro eSIM options vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Guides·15 min read·
Can You Receive OTP Codes With a Travel eSIM? (Bank SMS Guide 2026)
Can you still receive OTP codes, bank texts and verification SMS while using a travel eSIM abroad? Yes, in many cases, if your setup is right. Here is exactly how it works.
- Comparisons·11 min read·
Best eSIM for Telus Users Traveling Abroad (2026): Better Than TELUS Easy Roam?
Looking for the best eSIM if you use TELUS at home? Compare TELUS Easy Roam and Travel Passes vs a travel eSIM, learn how to keep your number, avoid roaming costs, and choose the smartest setup for international trips.
- Comparisons·11 min read·
Best eSIM for Vodafone Users Traveling Abroad (2026): Cheaper Than Roaming?
Looking for the best eSIM if you use Vodafone at home? Learn when roaming is enough, when a travel eSIM is cheaper, how to keep your Vodafone number, and the best setup for international trips in 2026.
- How-To·11 min read·
Does Wi-Fi Calling Work with a Travel eSIM? How to Keep Using Your Number Abroad (2026)
Does Wi-Fi Calling work with a travel eSIM? Often yes. Learn how Wi-Fi Calling works abroad, what your carrier must support, how to set it up safely, and how to avoid accidental roaming charges.
- ガイド·6 約分で読めます·
海外でデュアルSIM×eSIM設定方法ガイド
iPhoneとAndroidで海外eSIMを使ったデュアルSIMの設定方法。旅行中のデータ代を抑えつつ、自宅の番号は通話用にそのまま使えます。
- ガイド·7 約分で読めます·
iPhone eSIM設定完全ガイド2026｜全機種対応
iPhoneユーザー向け海外eSIM完全ガイド。iPhone XR〜16の対応機種、設定手順、デュアルSIM管理、トラブル対処、旅行のヒント。