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Translation via Google Translate:
Unfortunately, my device does not use the mobile data, although in my opinion the settings are correct. Activated, correct SIM etc.
Mobile goes, calls come through. So probably no problem provider or card.
Leider greift mein Gerät nicht auf die mobile Datennutzung obwohl an allen Stellen meines Erachtens die Einstellungen richtig sind. Aktiviert, richtige SIM etc.
Mobilfunk geht, Anrufe kommen durch. Also wohl auch kein Problem Anbieter oder Karte.
@Uwinho please post your comments in English. that way more people will be able to understand you and possibly help you with your issue.
I assume you've enabled mobile data? try downloading internet and MMS settings again. to do that, go to Settings > Network & Internet > Internet settings > Accept.
Manual setting
Settings->search for the word data -> scroll to Mobile data and switch the switch