Since Monday morning, O2 users across the Czech Republic have been experiencing a widespread outage of mobile services . According to reports, mobile internet, calls, and SMS messages are not working.
As shown by the server data DownDetector, the first complaints about the unavailability of services began to appear already shortly after 9 o'clock. ProProblems are being reported by customers across the country, and the cause of the outage has not yet been officially confirmed.
[Update]: O2 has already commented on the issue, saying it is working on a fix. However, it seems that the problems are widespread, as people from all over the Czech Republic are reporting that the operator's services are down.
⚠️ Some of our customers may currently experience reduced voice and data service availability across the Czech Republic. Our technicians have immediately begun to address the issue and are working to resolve it. We sincerely apologize to all affected customers.
— O2 CZ (@O2_CZ) August 4, 2025
