AT&T Users Experience Widespread Mobile Calling Issues

AT&T Users Experience Widespread Mobile Calling Issues

Karina Alvarez
1 min read

AT&T Users Experience Widespread Mobile Calling Issues

On Tuesday, AT&T users in several states faced significant difficulties in making wireless calls, with the problem persisting for over eight hours starting at 1 p.m. ET. According to Downdetector, the US Federal Communications Commission (FCC) has launched an investigation into the matter. Though AT&T did not officially term it a "nationwide outage," they acknowledged it as a "nationwide issue" affecting call completion between carriers. AT&T collaborated with Verizon to address the problem, and it was ultimately resolved by 8:20 p.m. ET. This incident follows an earlier massive outage, which AT&T attributed to network expansion errors rather than a cyberattack.

Key Takeaways

  • AT&T customers encountered mobile calling issues on June 4, 2024, from 1 p.m. ET for over eight hours.
  • The FCC is investigating the widespread inability of AT&T users to make wireless calls.
  • AT&T clarified it was not a "nationwide outage" but a "nationwide issue" affecting call completion between carriers.
  • By 8:20 p.m. ET, AT&T announced the issue was resolved, affecting calls between AT&T customers and other carriers.
  • Earlier this year, AT&T faced a massive outage due to network expansion errors, not a cyberattack.


The recent AT&T call disruption, impacting multiple states, underscores potential network integration flaws following rapid expansion. While not a complete outage, this incident affected inter-carrier call completion, indicating interoperability challenges. The FCC's involvement signifies regulatory scrutiny on telecom resilience. Short-term effects involve customer frustration and possible brand damage, with long-term consequences potentially leading to increased regulatory oversight and investment in network robustness. The collaboration with Verizon suggests broader industry-wide implications, potentially influencing future partnerships and standards.

Did You Know?

  • Downdetector: An online platform providing real-time updates on the status of various services, including internet service providers, online platforms, and mobile carriers, by aggregating user reports to detect and track outages.
  • US Federal Communications Commission (FCC): An independent agency of the United States government responsible for regulating interstate and international communications by radio, television, wire, satellite, and cable.
  • Call Completion Between Carriers: The technical process and agreements between different mobile network operators that enable successful call connections and maintenance, with issues potentially arising from technical glitches, network congestion, or interoperability problems between carriers.

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