T-Mobile explains why its network went down, hard, on Monday | The Verge

t-mobile-logo-stock-store_1020.0 T-Mobile explains why its network went down, hard, on Monday | The VergePhoto by Dante D’Orazio / The Verge

If you’ve been wondering what could knock out one of the United States’ three big cellular carriers’ ability to deliver calls and text messages — and keep it that way for most of an entire day — T-Mobile now has a partial answer that pertains to its extensive nationwide outage Monday.

The short version, if we’re reading this correctly: a fiber-optic circuit failed, and its backup circuit also failed, which caused a chain reaction that strained the network to the point that many calls and texts couldn’t make it through.

The longer version:

June 16th, 2020 6:23pm PST

Update on T-Mobile Voice and Text Performance

Every day we see the vital role technology plays in keeping us connected, and we know T-Mobile customers rely on our network to…

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