Stay Connected in the USA.
No Roaming Fees.
Crossing the Atlantic is exciting — but coming home to a huge phone bill isn't.
プラン一覧でデータ容量、有効期間、プラン全体の料金を比較してください。購入前に対象エリア、テザリング、公正利用の条件を確認してください。
That’s why British travelers choose a USA travel eSIM — installed before departure and ready the moment you land.
Status
Connected in USA
出発前にWi-FiでeSIMをインストールしてください。プランの利用開始条件を確認しましょう。インストールと利用開始は同じとは限りません。通信速度は場所、端末、プランによって異なります。
Smart Travel Tools
Plan your data needs before you fly. Use our smart tools to optimize your connectivity budget.
Where Will You Need Internet in the USA?
Where British Travelers Use Data Most
New York (NYC)
Essential for Subway Maps, finding the best pizza spots, and posting Times Square selfies.
Florida & Orlando
Vital for using apps in Theme Parks (Disney/Universal) and navigating rental cars to Miami.
California & Vegas
Reliable connection for Uber/Lyft in LA, road trips on Highway 1, and sharing Grand Canyon views.
Why Roaming from UK Can Cost You a Fortune
The Problems:
A Cellesim eSIM avoids this.
Why Choose Cellesim for USA?
See how we compare to other providers.
プラン一覧でデータ容量、有効期間、プラン全体の料金を比較してください。購入前に対象エリア、テザリング、公正利用の条件を確認してください。
Get Online in 3 Simple Steps
Buy Before You Fly
Choose your USA data plan while still in the UK. It takes less than 2 minutes.
Scan QR Code
Check your email. Scan the QR code. The eSIM installs automatically on your iPhone or Android.
Land & Connect
Turn on "Data Roaming" for Cellesim when you land in the USA. You are online instantly!
Recommended eSIM for UK to USA Travelers
High speed 5G data, reliable coverage, and zero hidden fees. Perfect for holidays and business trips.
USA Travel Starter
Best Choice for 1-Week Trips
- Instant activation
- AT&T & T-Mobile Coverage
- Works in All 50 States
- Keep UK Number Active
Can I Use WhatsApp?
Absolutely.
- WhatsApp works seamlessly with your UK number.
- iMessage & FaceTime work as usual.
- Your UK number remains active for bank OTPs and urgent calls.
Will It Work at the Airport?
Yes — instantly.
Your eSIM connects as soon as you land. Skip the expensive airport SIM kiosks.
Works perfectly at:
- JFK (New York)
- LAX (Los Angeles)
- MCO (Orlando)
- SFO (San Francisco)
Trusted by 50,000+ Travelers
See what British travelers say about Cellesim USA.
プラン一覧でデータ容量、有効期間、プラン全体の料金を比較してください。購入前に対象エリア、テザリング、公正利用の条件を確認してください。
James S.
London, UK
"So easy to set up. I activated it at Heathrow, and my data was working before I even got off the plane at JFK."
Emma L.
Manchester, UK
"I kept my O2 SIM for calls and used Cellesim for data. Maps worked perfectly on our road trip from Vegas to LA."
David P.
Birmingham, UK
"Great value. 5G speed in New York was faster than my hotel WiFi. Highly recommend for anyone visiting the States."
Sarah B.
Bristol, UK
Common Questions
Frequently asked by our British customers
All USA Plans
View all data options & prices
British Traveler Guide
Tips for your USA Trip
Traveling North America?
Check USA+Canada+Mexico
Ready for your trip?
Don't waste time at the airport. Get connected instantly and enjoy your holiday.
Get Connected Now