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Hi there



I'd like to know how to take Vodafone to O2. I have already purchased a mobile phone & sim card online and just arrived. It's a post-paid contract.
You can just register on Mein O2 and fill this form, but you need to take care that the number can be ported before that. For contract the number is portable to the end of a cancelled contract, for imidiate porting you need to notify the old provider and top up 25-30 € if it's prepaid.
Unfortunately I’m getting this message when I access the link you shared.



Entschuldigung

Aufgrund technischer Probleme können Ihre Daten derzeit leider nicht geladen werden. Bitte versuchen Sie es zu einem späteren Zeitpunkt erneut.



Ihr O2 Team
Hello @pinguim, welcome to the o2 Community! ☺️



Did you register with your current mobile phone number?

https://login.o2online.de/idm/#/registrieren/mobilfunk-vertrag



Greetings,

Katja🌻

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