比較ガイド · 2026年6月更新
英国ローミング vs eSIM
このガイドは英国のローミング vs eSIMを比較。キャリアパッケージ: EE & Vodafone UK vs travel eSIM and best eSIM UK.
EU fair-use caps
Even EU SIMs can throttle after heavy data use on longer 英国 stays.
Non-EU visitors pay more
US, UK and other non-EU plans rarely include 英国 data at home rates.
Hidden background data
Roaming on triggers app updates and burns your allowance or triggers fees.
Prepaid eSIM price
Pick GB and days upfront—fixed cost before you land at LHR.
ローミングが高くなる理由
英国 cities need reliable mobile data for maps, trains and messaging. Non-EU visitors pay travel passes or per-MB rates. EU residents can hit fair-use limits on extended trips.
コスト比較
| 選択肢 | 料金モデル | 注意 |
|---|---|---|
| Home roaming (non-EU) | Daily pass or per-MB | Adds up over 7–14 days in 英国 |
| EU home roaming | Often included with cap | Fair-use throttle after heavy use |
| 英国旅行eSIM | One-off prepaid (GB + days) | Usually data-only; QR before LHR |
| Airport SIM / local shop | Prepaid in person | Queues, local forms, passport registration |
ローミング料を避ける
- Turn off Data Roaming on your home SIM before you leave.
- Install a prepaid 英国 eSIM on Wi-Fi before your flight.
- Enable the eSIM data line after landing at LHR.
- Keep your home number for SMS on Wi-Fi; do not use it for mobile data.
関連ガイド
FAQ
EU/EEA SIMは原則対象—長期滞在はフェアユース。UK・米国など非EUはフルローミング料金。
EU居住者は上限付き込みのことも。非EUは日額パスがプリペイドeSIMより高くなることも。
ローミングOFF、出発前に英国 eSIMをインストール、LHR着陸後eSIMでデータ。
はい。オンライン購入、自宅でQR、LHR着陸後にデータON。