Prepaid SIM suddenly lost roaming signal abroad (valid account, topped up 1 Euro) | O₂ Community
Hello O2 Team,I activated my O2 prepaid SIM card in April 2026 and successfully topped up 1 Euro. The "Mein O2" app shows that my account balance is valid until April 2027. However, since April 26th, the SIM card suddenly lost all roaming signals. I am currently on a long-term business trip abroad (...