VIAll US Virgin Islands eSIM plans compared
| プロバイダー | 価格（5GB） | 通信範囲 | 評価 | こんな方におすすめ |
|---|---|---|---|---|
| HelloRoam | N/A | T-Mobile, AT&T (Liberty), Viya | 4.9/5 | 総合最高 |
| Airalo | ￥2,432 | 200カ国以上 | 4.5/5 | 最多渡航先 |
| Holafly | 無制限 | 160カ国 | 4.2/5 | ヘビーユーザー |
US Virgin Islandsのおすすめトップ3
US Virgin Islandsで利用可能な1件のeSIMプランを評価し、確認済み価格・ネットワーク通信範囲・開通速度・アプリ品質を比較しました。 おすすめのオプションをご紹介します。
メリット： 1GBあたりの価格が最安値、高速開通、T-Mobile, AT&T (Liberty), ViyaでのUS Virgin Islands通信カバレッジ。 デメリット： 比較的新しいブランドで、Airaloよりコミュニティが小さい。
| ティア | 期間 | 割引 | 開始価格 |
|---|---|---|---|
| ショートステイ | 1-2日 | 4%オフ | $6.70$3.35/日 · 2d |
| ウィークパッケージ | 3-9日 | 8%オフ | $22.48$3.21/日 · 7d |
| 延長ステイ | 10-19日 | 11%オフ | $31.06$3.11/日 · 10d |
| マンスリーパッケージ | 20-29日 | 15%オフ | $59.33$2.97/日 · 20d |
| 長期滞在最もお得 | 30-365日 | 18%オフ | $85.85$2.86/日 · 30d |
メリット： 200カ国以上対応、チャージ可能、最大のコミュニティ。 デメリット： 一部ルートでは新興プロバイダーより割高で、サポートの応答時間にムラがある。
メリット： 真の無制限データ、速度制限なし、24時間365日ライブチャットサポート。 デメリット： プレミアム価格で、1GBあたりの選択肢なし。
Network coverage in US Virgin Islands
Three carriers serve the US Virgin Islands: T-Mobile, AT&T (Liberty), and Viya (the local operator formerly known as Innovative VI). T-Mobile and AT&T provide the widest coverage across all three islands, with T-Mobile performing best in St. Thomas and St.
John. Viya is the primary local operator and serves more remote areas of St. Croix and the smaller outer islands.
Holafly's unlimited eSIM plans are the leading option for visitors seeking a dedicated USVI data plan without worrying about throttling.
通信範囲の分析
St. Thomas gets the strongest coverage, with T-Mobile and AT&T delivering LTE across Charlotte Amalie, Red Hook, and Magens Bay. St.
John has reliable signal in Cruz Bay and along the North Shore Road near Trunk Bay, though remote interior trails drop to 3G or no signal. St. Croix has consistent LTE in Christiansted and Frederiksted, with reduced signal in the rainforest interior.
The outer islands (Water Island, Buck Island) have spotty coverage. Cruise ship passengers docking in St. Thomas find full LTE in the port area.
開通方法
Install your eSIM QR code before departure. T-Mobile and AT&T eSIMs activate automatically when you arrive in St. Thomas or St.
Croix. No counter visit is needed. US citizens do not need a passport for USVI travel, and the eSIM purchase process requires only a standard email address and compatible phone. iPhone XS or newer, Pixel 3a or newer, and Galaxy S20 or newer support eSIM.
Ensure your device is carrier-unlocked before traveling.
データ通信の活用のコツ
Budget 300-500 MB per day for navigation in St. Thomas, WhatsApp, and social media. Snorkeling map downloads at Trunk Bay and Buck Island National Monument use about 50 MB each.
Streaming beach music on Spotify uses 80 MB per hour at normal quality. A 7-day trip to USVI covering St. Thomas and St.
John typically uses 2-3 GB total for typical tourist activity. Cruise passengers docking for a day need 500 MB to 1 GB for maps, dining lookups, and photo sharing.
US Virgin Islandsのプラン評価方法
US Virgin Islands eSIM plans start at $3.99 for a 7-day pass. Holafly leads on unlimited plans for visitors who want predictable pricing. Plans are priced competitively compared to cruise ship Wi-Fi packages, which often cost $20-30 per day for slower speeds.
Buying a dedicated USVI eSIM beats relying on US domestic data roaming for extended island stays, where throttling typically kicks in after 200-500 MB.
Best eSIM plans for US Virgin Islands in 2026
| プラン | ネットワーク | 有効期限 | 価格 |
|---|---|---|---|
| US Virgin Islands 7 Days ⭐ | T-Mobile, AT&T (Liberty) | 7d / 0GB | ￥606 |
Prices verified: May 2026
Questions about US Virgin Islands eSIMs
Do I need an eSIM for the US Virgin Islands if I have a US phone plan?+
Which networks work best in St. Thomas?+
Is there eSIM coverage on St. John?+
How much data do I need for a week in USVI?+
What is the cheapest eSIM for US Virgin Islands?+
Can I use my eSIM across all three main islands?+
Do I need a passport for USVI if I am a US citizen?+
Does my eSIM work on cruise ships docking in St. Thomas?+
プロバイダーレビュー
US Virgin Islandsで利用可能なトップeSIMプロバイダーの詳細レビューをご覧ください。
