Att Outage 22 Feb 2024. Here's what you need to know. The federal communications commission has opened a formal investigation into last month’s nationwide at&t outage that left millions of people without cellphone service for.

The outage is severe enough that affected at&t customers appear to be unable to place or receive any phone. Possible causes of the outages included everything from software update errors, problems in the core network, to cyberattacks, experts said while the problem was ongoing.