Guía del usuario de Nokia 4.2
Use a mobile data connection
Close the mobile data connection
Swipe down from the top of the screen, tap Mobile data and switch it off.
Turn on the mobile data connection
Swipe down from the top of the screen, tap Mobile data and switch it on.
Use a mobile data connection when roaming
Tap Settings > Network & internet > Mobile network , and switch Roaming to On .1
Tip: To follow your data usage, tap Settings > Network & internet > Data usage .