Urgent: Lost SIM card abroad, cannot login via 2FA. Please block my SIM.

Forum|Forum|3 days ago
July 10, 2026
2 Antworten
16 Aufrufe

Ayudasim2026
Besucher:in

Hello o2 team, I am writing from a friend's account. I am currently abroad and I have lost my phone and my SIM card. I want to block my SIM card to avoid fraud, but I cannot log into my personal portal because it asks for a 2FA SMS code. Can a moderator please contact this account via Private Message (PN) so I can provide my personal details and block my line? Thank you.

o2_Giulia, 09.07.2026, 17:59: verschoben von O₂ Home zu English O₂ Community: Mobile

o2_Giulia
Moderatorin
Forum|Forum|3 days ago
July 10, 2026

Hello @Ayudasim2026,

welcome to our o2 Community.

It's so annoying when you lose your phone; I'm sorry to hear that. I have sent you a private message.

Do you have access to your email-account? Please check whether you can receive the security code for logging in to "Mein o2" via email:

You can block your SIM-card there under “Tarif & SIM-Karte”, “SIM-Karte verwalten”.

Alternatively, you can request the block by phone; you can find the numbers for our hotlines—including the English-language service—here: Kontakt aufnehmen und Hilfe finden | o2

Best regards

Giulia

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o2_Giulia
Moderatorin
Forum|Forum|3 days ago
July 10, 2026

Hello @Ayudasim2026,

your SIM-card was blocked in the meantime.

Please let us know if you have any further questions.

Best regards

Giulia

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