Telnyx outage, 15 September 2026

SMS Delivery - Encoding Issues on Outbound Messages to T-Mobile

Started
Resolved
18 Sept 2026, 16:26 UTC (after 2 days)
Impact
Minor

Last update from Telnyx

Our downstream partner's fix for garbled message bodies on 10DLC SMS to T-Mobile destinations has been confirmed. Impact was limited to 10DLC senders assigned to 501(c)(3) tax-exempt campaigns. Both test and live traffic to T-Mobile destinations are delivering intact. An RCA will follow.

18 Sept 2026, 16:26 UTC

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This page is the record of one past incident. For the live status, see Is Telnyx down right now? - it reads the official status page every 2 minutes.

Other Telnyx incidents

  1. Telnyx's Support AI Assistant (TAIA) - currently unavailable

  2. API v2 - Intermittend Processing Delays

  3. Messaging intermittent errors and latency

  4. Email API messages rejected with gw_reject// injection_failed

  5. New eSIM provisioning error

  6. Delayed delivery of 10DLC SMS messages to AT&T destinations

  7. Cloud Storage us-west-1 Region Temporarily Unavailable

  8. Errors for K2.6 Chat Completions (Voice AI not affected)

All recorded Telnyx incidents