Turn On/Off Data Roaming

iOS

Step 1: Open Settings, then tap on 'Mobile Service'

Step 2: Select 'Mobile Data Options'

Step 3: Enable or disable ‘Data Roaming’ by sliding the toggle

Android

Step 1: Open settings, then tap on 'Connections’	Step 2: Select 'Mobile networks'
Step 3: Enable or disable ‘Data Roaming’ by sliding the toggle