To turn on roaming on an Android device, follow these steps:
- Open the Settings app on the Android device.
- Tap on Connections or Network & internet (the naming may vary by device).
- Select Mobile Networks.
- Toggle the switch for Data Roaming to the On position.
This allows your phone to use mobile data when connected to networks outside your home carrier, especially useful when traveling internationally or in areas covered by partner networks. Note that some devices may ask for a confirmation pop-up after enabling data roaming. The exact menu names and steps can vary slightly depending on the Android device model and version.