Cellcom customers across northeast Wisconsin experienced a widespread voice and SMS messaging outage that began Wednesday night, May 14, 2025, around 11 p.m., leaving approximately 300,000 subscribers unable to make calls or send text messages. The regional telecommunications company confirmed the outage continues with no firm timeline for restoration, though teams report making “steady progress” toward resolution. Service Status and Customer Impact While voice services and SMS messaging remain unavailable, data services, iMessage, and RCS messaging continue operating normally. Most critically, 911 emergency services remain fully operational throughout the outage period. The outage affects Cellcom’s coverage area spanning Brown, Oconto, … Continue reading Cellcom’s 300K Customers Lost Voice SMS Since Wednesday, Twilio Maintenance Blamed