Calls and contacts
Apps and media
Cause 1 of 3: Data roaming is turned off
To use tethering when abroad or when connected to another operator's network, data roaming needs to be turned on on your phone.
Solution: Turn on data roaming.
Find "Mobile Data"
Press Mobile Data.
Turn data roaming on or off
Press the indicator next to "Data Roaming" to turn the function on or off.
Return to the home screen
Press the Home key to return to the home screen.