ATT Mexico (including Iusacell, Unefon, and Nextel networks) experienced network issues that caused delays in SMS message delivery for end users. The incident lasted 59 minutes from 5:05 PM to 5:59 PM PDT on May 21, 2026, and was resolved when the operator restored normal service functionality.
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Start Time: 5:05 PM PDT - 5/21/26
End Time: 5:59 PM PDT - 5/21/26
We received notification that the network issues previously reported by ATT (Iusacell&Unefon&Nextel) (334/01;010;04;040;05;050;09;090;07;070;080) from Mexico (MX) have been resolved. ATT (Iusacell&Unefon&Nextel) (334/01;010;04;040;05;050;09;090;07;070;080) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
SF 01175280
Start Time: 5:05 PM PDT - 5/21/26
End Time: Ongoing
We received notification that ATT (Iusacell&Unefon&Nextel) (334/01;010;04;040;05;050;09;090;07;070;080)] from Mexico (MX) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
SF 01175280
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