If you’re on Google Fi and landed in a another country and turned off Airplane mode and you get no data, try the following (with wifi off so you don’t get confused).
Open the Google Fi App
The app should welcome you to the country you have just landed in. However, it may also say “You’re offline”.
Go to Settings > Network & internet > Mobile network >
- Ensure “Mobile data” is enabled
- Ensure “Roaming” is enabled
- Click “Advanced” and disable “Automatically select network”. You will then see a list of local cellular networks. Some may be G, 3G and LTE. Pick one that works, preferably a faster one.
At this point, you should be able to connect to the internet on your phone.