DATA

[Baldrik01]

I recently changed networks and sim, I now have a data allowance. Should I be able to use WhatsApp via this with WiFi turned off? How do I turn data on. Never used it before!  S9+

[Je655]

Settings>about phone>status>sim card status

Now when your on that page turn off your wifi, give it a min or two to transfer the connection to mobile.

Do you have something under mobile data network?

Any app on your phone should have data access if its working properly.

you can do a test if its working properly by turning off wifi and trying to load a web page like google.com

[Baldrik01]

Tried all you said no connection to Google could not reply on here no connection!! Mobile data says type unknown! Had to turn on Wi-Fi to post!

[Je655]

Its possibly you have data turned off

Settings>connections>data usage>mobile data

Make sure this is on, if its still not working then your issue could be more serious or from your network provider.

[Reginard]

It may be that your access point is not set up correctly.  Contact your provider for the details needed and then go to:

Settings/ Connections/ Mobile Networks / Access point names/ Add

and fill in the details provided (normally, not all fields need to be completed)

While you're at it, go to

Settings/Connections/ Mobile networks/ Network operators

and make sure that Select automatically is selected.