Outage in Bandwidth
Outbound SMS Incident - T-Mobile
Minor
September 14, 2026 - Started about 23 hours ago
Official incident page
Official incident page
Incident Report
Bandwidth teams are investigating an off network condition where outbound SMS messages to T-Mobile are receiving an unexpected error code of 4740. These messages may not complete as expected.
Components affected
Bandwidth SMS Messaging (SMPP)Trusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
IDENTIFIED
about 18 hours ago - at 09/14/2026 11:46PM
This incident has been identified as an off network incident. T-Mobile is working to restore expected delivery results. Updates will be provided as they become available.
INVESTIGATING
about 23 hours ago - at 09/14/2026 06:31PM
Bandwidth teams are investigating an off network condition where outbound SMS messages to T-Mobile are receiving an unexpected error code of 4740. These messages may not complete as expected.
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