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minor✓ Resolved

SMS Delivery Delays from Twilio Phone Numbers to T-Mobile United States

TwilioWed, May 20, 2026, 03:43 PM
Status
resolved
Duration
1d 4h
Updates
10
Coverage
0 articles

INCIDENT TIMELINE

✓ ResolvedThu, May 21, 2026, 08:15 PM
This incident has been resolved.
monitoringThu, May 21, 2026, 06:03 PM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US , Our team has monitoring the cause, and is working to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.
identifiedThu, May 21, 2026, 12:01 PM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hour or as soon as more information becomes available.
identifiedThu, May 21, 2026, 03:59 AM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hour or as soon as more information becomes available.
identifiedWed, May 20, 2026, 11:49 PM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hour or as soon as more information becomes available.
identifiedWed, May 20, 2026, 09:47 PM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.
identifiedWed, May 20, 2026, 08:45 PM
We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
monitoringWed, May 20, 2026, 06:24 PM
We have observed a recovery in SMS and MMS delivery from Twilio Phone Numbers to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
identifiedWed, May 20, 2026, 04:55 PM
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.
identifiedWed, May 20, 2026, 03:54 PM
Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
investigatingWed, May 20, 2026, 03:43 PM
Twilio customers may be experiencing SMS delivery delays from Twilio Phone Numbers to T-Mobile network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

📊 TECHNICAL DETAILS

Internal ID
231183d4-8463-4834-bba4-a4573c03d4b5
External ID
s174m0z3vkn9
🕐 Started
Wed, May 20, 2026, 03:43 PM
🔄 Last Updated
Thu, May 21, 2026, 08:15 PM
✓ Resolved
Thu, May 21, 2026, 08:15 PM
MINOR
Impact Level
1d 4h
Total Duration
10
Status Updates
Affected Components
SMS Short Code, North America
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