Hello @Mahmoud1987,

welcome to our o2 Community

I didn't really understand your question. What exactly is an online SIM card? Did you mean a prepaid card?

If this is the case, you can simplyorder a new contract and then port the phone number from your prepaid card to the new contract card. Any existing credit will then be transferred automatically.

Best regards

Giulia

Yes, I mean a prepaid or test card that I've already activated online. Will you inform me about the extension of the contract at the end of the current contract?

Hello @Mahmoud1987,

the test card expires automatically after one month, it cannot be extended.

You would then have to order a new contract, i.e. Handytarife günstig sichern: Alle o2 Smartphone-Tarife (o2online.de)

Best regards

Giulia