Please make sure that before you travel you have requested via a support ticket for 2talk to enable roaming on your 2talk mobile plan.
Once you have roaming enabled on your mobile plan you should not need to make any other changes to be able to roam. As long as your destination is a supported roaming destination all you will need to do is turn off flight mode and connect to a local cellular network.
Once you connect you will receive a welcome text that will confirm if roaming is supported or not.
Fees will be charged for roaming - you will be charged based on the destination you're in. Please see our roaming rates for more details.
Android
To turn on Data Roaming
Settings -> Connections -> Mobile networks -> Data Roaming (on)
iPhone
To turn on Data Roaming
Settings -> Mobile -> Mobile Data Options -> Roaming (on)