Seeking help with O2 Prepaid SIM – No signal and Wi-Fi Calling

Forum|Forum|25 days ago
May 6, 2026
6 Antworten
35 Aufrufe

czc
Besucher:in

I am writing this post to seek assistance regarding my O2 prepaid SIM card, which I recently purchased in Nuremberg, Germany.

I have encountered the following issues:

No Network Signal: My phone displays "No Service" or "Searching" and is unable to connect to any local roaming networks.

Wi-Fi Calling Not Working: Even when connected to a stable internet connection, I am unable to activate or use the Wi-Fi Calling feature to receive SMS or make phone calls.

Please assist me by letting me know how I can check the following:

Is my SIM card still active, or has it been deactivated?

Bumer
Forum|Forum|25 days ago
May 6, 2026

Has it ever been active before? You need to identify yourself to activate it.

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czc
Autor
Besucher:in
Forum|Forum|25 days ago
May 6, 2026

My prepaid SIM card was successfully activated and had been functioning normally until about 10 days ago. The 'No Service' issue only started recently.

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Bumer
Forum|Forum|25 days ago
May 6, 2026

What does it say in My o2?

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czc
Autor
Besucher:in
Forum|Forum|25 days ago
May 6, 2026

I can log in to the 'My O2' portal successfully using my email address, as I am unable to receive SMS verification codes. There are no error messages or alerts displayed in the portal; my prepaid balance is sufficient, and the status of my SIM card is shown as 'Active'.