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USA eSIM · T-Mobile 5G

USA eSIM from $4.
Pay once. Skip roaming.

One price for your whole US trip. Connect on T-Mobile where coverage is available, with your WhatsApp number unchanged.

  • 14-day refund if not installed
  • WhatsApp number stays
  • Easy QR setup
  • Pay once, no contract
A favourite for a 2-week trip
3 GB

USA · 15 days

$8

paid once

  • 3 GB of US data for 15 days
  • One payment. No daily charges
  • Connect when you arrive and activate
or compare all 13 USA plans ↓
NetworkT-Mobile

Every USA plan. Pay once.

Pick the trip length, then the data. Check out securely with CALA.

3 GB

15 days

$8

One-time payment

Unlimited

15 days

$43

One-time payment

Prices in USD. Optional monthly auto-renew is available for eligible 30-day plans in the cart.

A week in the USA: roaming vs CALA.

Roaming with your home network

Daily charges

Charges and allowances depend on your provider and contract. Check your network's USA rates before you fly.

CALA USA eSIM

$13

10 GB for 7 days. Paid once, with no daily roaming fee.

Online in three moves.

Your travel data, ready before take-off.

  1. 01

    Pick your plan

    Choose the USA data allowance and validity that fit your trip.

  2. 02

    Secure checkout

    Pay with Stripe. One-time payment by default; auto-renew is optional for eligible plans.

  3. 03

    Scan & connect

    Your QR code arrives by email. Install over Wi-Fi and enable data roaming on your travel eSIM.

Travel more. Worry less.

WhatsApp number does not change

Chat, call and share just like at home. Keep your number while CALA adds travel data.

WhatsAppGoogle MapsUberInstagramGmail

14-day refund guarantee

A full refund within 14 days if the eSIM has not been scanned or installed. Refund policy

Help when you need it

Ask our AI assistant, or request a human in live chat. Email replies take 5–7 working days, Monday–Friday.

Network coverage in USA

Supported network technologies vary by device and location.

T-Mobile
3G4G5G

Not sure your phone supports eSIM? Check device compatibility

USA eSIM questions

Which network will I use in the USA?

T-Mobile. Available speeds depend on your phone, plan and location. Keep network selection and data mode on Automatic/Auto.

Is this cheaper than roaming with my home network?

Compare the one-time plan price with your network's USA roaming charge. Daily roaming fees and included allowances vary by provider and contract.

Will my WhatsApp number change?

No. Keep your existing WhatsApp number. This data eSIM does not provide a new phone number; calls and messages over apps use your data allowance.

How do I set it up?

Your QR code arrives by email after checkout. Install over Wi-Fi on an unlocked, eSIM-compatible phone. Choose CALA for mobile data, enable data roaming for that eSIM, and leave network selection and data mode on Automatic/Auto. Keep roaming off for your home SIM.

What if I don't use it?

You can receive a full refund within 14 days if the eSIM has not been scanned or installed. Contact support@calafly.net with your order number.

Will my phone work?

Your phone must support eSIM and be unlocked. Check the device compatibility page before purchasing. Check your device

What if data does not work after adding a plan?

Reboot your phone, or turn flight mode on for 2 minutes and then off again. Leave your network and data settings on Automatic/Auto. For activation or order help, use Talk to a human in the chat.

What if my plan runs out?

Buy a top-up for the same destination anytime at customer.calafly.net. Your existing eSIM profile stays installed. Customer portal

Land ready.
Data steady.

USA plans from $4. Pay once. Travel connected.

Choose my USA plan