AT&T promises to email or text customers when there’s an outage and credit them for a full day’s worth of service if the outage meets its criteria. Those include fiber outages lasting at least 20 minutes and “wireless downtime lasting 60 minutes or more caused by a single incident impacting 10 or more towers.

AT&T; has unveiled what it calls the “AT&T; Guarantee,” a comprehensive promise to enhance customer experience across its wireless and fiber networks, incl