T-Mobile's 10-day option is $50. A Slashtel eSIM with at least 15GB for the same trip is $14.69. Keep your T-Mobile number for calls and texts.
See France eSIM plans →T-Mobile's 10-day International Pass option costs $50 (15GB of data). A Slashtel data eSIM for France with at least 15GB for 30 days costs $14.69, so $35.31 less. The eSIM is data only: keep your US SIM in the phone for calls and texts. T-Mobile prices checked on t-mobile.com on 23 September 2026.
| T-Mobile | Includes | Slashtel eSIM (same days or more) | Difference |
|---|---|---|---|
| $10 · 1 day | 2GB | 3GB, 15 days: $3.49 | $6.51 less |
| $50 · 10 days | 15GB | 20GB, 30 days: $14.69 | $35.31 less |
| $75 · 30 days | 30GB | 50GB, 30 days: $29.99 | $45.01 less |
T-Mobile prices from t-mobile.com, checked 23 September 2026; T-Mobile's options include calls as well as data. Where T-Mobile charges by the day, we compare an eSIM with at least 1GB a day. Some T-Mobile plans already include limited international data; the International Passes below add high-speed data and unlimited calling. Slashtel prices are live, in US dollars; your card is charged in your own currency at checkout. T-Mobile is a trademark of Deutsche Telekom AG. Slashtel is not affiliated with T-Mobile.
For data, the eSIM. T-Mobile's 10-day option is $50; a Slashtel eSIM with 20GB for 30 days is $14.69. T-Mobile's option also includes calls, which the eSIM does not.
Yes. The eSIM is added alongside your T-Mobile SIM, so your number stays in the phone for calls and texts such as bank codes. Set the eSIM as the line for mobile data and turn data roaming off on the T-Mobile line. Whether T-Mobile charges for anything you receive abroad depends on your plan, so check with T-Mobile before you travel.
No. It is data only, with no phone number. You can call on WhatsApp, FaceTime or similar apps over the eSIM data.
Most iPhones from the XS onwards, Google Pixel 3 and later, and recent Samsung Galaxy S, Z and A models, provided the phone is not carrier-locked. Check under Settings for an option to add an eSIM.
Install it at home before you fly, while you have Wi-Fi, and switch mobile data to it when you land.