Due to Network Technology compatibility, voice calls are currently unavailable on AT&T.

As an alternative, we recommend roaming on T-Mobile’s network once you have arrived in the USA. Having said that, apart from traditional voice calling on T-Mobile USA, it is also possible to use VoLTE on this network. If you have a VoLTE enabled device, you can enable the VoLTE function to make Incoming/Outgoing roaming calls on the LTE/4G network.

How to connect to T-Mobile USA

Step 1: Check if you are on T-Mobile’s network

On your smartphone, you will see the mobile network provider you are connected to appear on the top left corner of your screen.

If you see T-Mobile, you are all set and ready to roam. If you do not see T-Mobile, please follow the next step.

Step 2: Switch to T-Mobile's network

Number one on an orange circle

Go to Settings > Mobile Data > Network Selection

Number 2 on an orange circle

Disable Automatic, then select T-Mobile

Number three on an orange circle

Now you are ready to roam in the USA

How to enable VoLTE

VoLTE on T-Mobile USA is currently available for subscribers with iOS only.

Purple circle with the letter 1

Open the Settings app on your iOS device

Purple circle with the letter 2

Tap on Mobile Data

Purple circle with the number 3

Tap on Mobile Data Options

Purple circle with the number 4

Select Voice & Data

Number 5 on a purple background

Tap on VoLTE in order to enable it


What is roaming?

Roaming is the ability to connect to a mobile network when you are travelling overseas. By connecting to a network provider from the country you’re visiting, you’ll be able to use your GO SIM to make use of data, calls and SMS. Visit our Travel page to check which mobile network you can connect to when visiting any country around the world.

Remember to enable your data roaming limit from your MyGO account found in the Settings tab so that you’ll get notified via SMS once you reach the €50 limit.

What network do I use while roaming?

Before you go on your trip, it’s a good idea to check which mobile operator you can use while you’re in the country. Just visit our Travel page and search for the country you’re heading to.

To make sure you stay connected to a network while you’re there, manually choose one of the networks from the list. Simply go to your ‘Mobile network’ settings, switch to Manual, and select the operator you prefer.

If you’re travelling to the USA, please keep this in mind: AT&T has shut down their 2G and 3G mobile data networks since February 2022. This means you won’t be able to make or receive voice calls while roaming in the USA with them. To roam as usual, we recommend switching to T-Mobile upon your arrival in the USA.

How do I turn on data roaming from my phone settings?

Some devices do not have data roaming automatically active, so if you would like to make use of mobile data whilst travelling abroad, you need to make sure that this setting is also activated from your device’s settings.

To activate data roaming from an Android device:

  1. Go to the ‘Settings‘ app and tap on ‘Connections
  2. Tap on ‘Mobile Networks
  3. Then, tap on the switch to activate ‘Data Roaming

To activate data roaming from and iOS device:

  1. Go to the ‘Settings‘ app, tap on ‘Mobile Data‘ and then tap on ‘Mobile Data Options
  2. Finally, tap on the switch to activate ‘Data Roaming

If data roaming is ON, yet you still cannot use mobile data whilst abroad, you will need to check whether you are connected to the correct service provider.

If you are still unable to connect, check out this FAQ for further help.

How can I top up while roaming?

It’s super easy to top up your mobile service while roaming. You can also set up Auto Top-up just before you embark on your travels by logging into the GO app. In this manner, you can fully enjoy your time abroad without having to worry about topping up.

Whilst travelling, you can top up using our online channels, the GO app, MyGO or the GO website.