Outage in Telesign

Quality degradation - United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830)

Resolved Minor

July 13, 2026 - Started 4 days ago - Lasted about 1 hour
Official incident page

Incident Report

Summary AI Generated

T-Mobile US subscribers experienced SMS delivery delays and failures due to a network-side quality degradation issue lasting approximately 30 minutes on July 13, 2026 (8:00–8:30 AM PT). The incident affected SMS delivery across all T-Mobile US network codes. T-Mobile resolved the underlying network issue, and full SMS delivery functionality was restored with no further action required on Telesign's end.

Issue: US/CA Operator - United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) Start Time: 08:00 AM PT - 07/13/26 End Time: Ongoing Summary: We currently experience quality degradation toward United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) SMS messages towards these operator(s) may face delays or difficulties in delivery. Telesign is engaged with carrier partners for updates on resolution. We'd like to apologize for any inconvenience and appreciate your patience during this service interruption. If you have any questions, please contact support@telesign.com. SF01202874

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Latest Updates ( sorted recent to last )

RESOLVED 4 days ago - at 07/13/2026 04:26PM

Start Time: 08:00 AM PT - 07/13/26
End Time: 08:30 AM PT - 07/13/26

We received notification that the network issues previously reported by T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) from United States (US) have been resolved. T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.

SF01202874

INVESTIGATING 4 days ago - at 07/13/2026 03:14PM

Issue: US/CA Operator - United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830)

Start Time: 08:00 AM PT - 07/13/26
End Time: Ongoing

Summary:

We currently experience quality degradation toward United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830)
SMS messages towards these operator(s) may face delays or difficulties in delivery.

Telesign is engaged with carrier partners for updates on resolution. We'd like to apologize for any inconvenience and appreciate your patience during this service interruption.

If you have any questions, please contact support@telesign.com.

SF01202874

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