How To Add International Plan To T-Mobile: Easy Step-by-Step

Adding an international plan to T-Mobile means purchasing an International Pass for a specific line on your account, which provides high-speed data and unlimited voice calling in 215+ countries and destinations. You can add an international pass directly through the T-Life app or by signing into My T-Mobile on the web.

Add an international pass in the T-Life app

Open the T-Life app and tap Account.
Tap See Plans.
Tap Manage Add-ons and data.
Tap One-Time Data Pass.
Choose an International data pass.
Select the device line you want to add the pass to.
Set the Effective date for when you want the pass to start.
Tap Continue to complete the purchase.

T-Mobile also documents a second app flow: ACCOUNT > MANAGE DATE & ADD-ONS > check the box next to the pass > CONTINUE > CHANGE DATE to set the start date. T-Mobile's support pages list add-on categories including Monthly Data Plan, One-Time Data Pass, and Services. If you do not change the effective date, the pass starts immediately. The pass is added to a single line, not the entire account.

Add an international pass on My T-Mobile (web)

Sign in to My T-Mobile on the web.
Open Account or Manage Add Ons.
Expand the line you want to add the pass to.
Select Manage Data & Add-Ons.
Choose the desired data pass from the available options.
Choose a start date for the pass.
Select Agree & Submit to confirm.

This flow is available for eligible T-Mobile postpaid lines. The pass you select will add high-speed data and unlimited voice calling for your travel destination, as long as that destination is among the 215+ supported countries.

Before you travel: Check compatibility and settings

Before you purchase a pass, verify that your destination is included in the 215+ countries and destinations where International Passes work. The pass can only be added to a qualifying postpaid line on your account. To help control data usage while roaming, set up Wi-Fi Calling on your device:

On iPhone: Go to Settings > Cellular > Wi-Fi Calling and toggle Wi-Fi Calling on This iPhone.
On Android: Go to Settings > Connections > Wi-Fi Calling, toggle it On, and set Calling Preference to Wi-Fi Preferred.

Using Wi-Fi Calling can reduce your reliance on cellular roaming data, which is especially useful for "international calling and plans" (International Calling Plans and Roaming on Carriers) when you want to keep data costs predictable.

Manage international data roaming with short codes

T-Mobile provides short codes to control international data roaming directly from your phone. To turn international data roaming off, dial #ROF# (or #763#). To turn it back on, dial #RON# (or #766#). These codes work on the line you are currently using and give you immediate control over data usage while traveling. For travel-related account controls, T-Mobile also documents short codes to manage roaming on the line: #ROF# / #763# to disable international data roaming, #RON# / #766# to turn international data roaming back on.

Getting extra help from T-Mobile

If the self-service methods in the T-Life app or My T-Mobile do not work for your situation, you can call T-Mobile support, use the online chat feature on their website, or visit a T-Mobile store for personalized assistance. Store representatives can help you select the right pass, configure your device settings, and activate the pass on your account.

Frequently Asked Questions

How long does an International Pass last?

International Passes are one-time data passes that last for a specific duration, such as a day, week, or month, depending on the pass you choose. The exact length is shown when you select the pass in the app or on the website.

Will adding an International Pass affect my domestic plan?

No. Adding an International Pass does not change your existing domestic plan. It simply adds high-speed data and calling for international travel on the line you select, while your regular plan remains unchanged.

Are there different International Passes for different countries?

T-Mobile offers International Passes that work in 215+ countries and destinations. The same pass typically covers all eligible destinations, so you do not need a separate pass for each country you visit.

Can I add an International Pass for a line that is not on a postpaid plan?

International Passes are available for eligible T-Mobile postpaid lines. Prepaid and other non-qualifying plans may not support adding a pass through the standard flow.

What happens if I travel to a country not in the 215+ supported destinations?

If your destination is not listed as supported for International Passes, you will need to check T-Mobile’s roaming help pages or contact customer service for alternative options, such as pay-per-use roaming or local SIM cards.