Das geht am schnellsten, wenn du das in mein o2 oder in der App selber machst.

Hallo @Sebastian E.,

schau mal mit bildlicher Anleitung:

LG

Hallo @Sebastian E.,

war es dir möglich die Freigabe deiner Nummer zu hinterlegen oder brauchst du dabei weiterhin Unterstützung. Dann schauen wir hier natürlich gerne einmal für dich nach.

VG
Dennis

Hi,

I would like to opt in so that I can transfer my phone number.

Thanks

@Sowmya 

please try

https://www.o2online.de/chat-auswahl/

Hello @Sowmya 
Welcome to our community 
Unfortunately, we cannot set up the opt-in for you. If you are unable to do this online, please contact our live chat  (poales has already sent you the link)
Thank you and best regards

Kathi

Hi,

I would like to opt in so that I can transfer my phone number. Please do the needful.

Thanks

Where would you like to log in, in My o2?

Hello @Sowmya 
I have seen that you have already been answered in the other post where you also wrote 
Please do not post your request or question in several threads so that it remains clear and no one gets confused 
Best regards, Kathi