SIP Registration Failure on iOS Bria Softphone

What to do

• Check whether your product depends on Twilio. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 1h 51m it lasted.

  Anything that failed between 2026-05-04 08:03 UTC and 2026-05-04 09:54 UTC may need a replay.

• Subscribe to Twilio's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=twilio works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Twilio 2

1. identifiedMay 4, 2026, 8:03 AM UTC

   We are currently investigating a service disruption that is causing SIP registration failures with 503/32008 errors on iOS Bria Softphone, while the same configurations work on PC and Android devices. The current workaround is to use a PC or Android device for SIP registration. We expect to provide another update in 2 hours or as soon as more information becomes available.

   provider

2. resolvedMay 4, 2026, 9:54 AM UTC

   Following a thorough investigation, we can confirm that Twilio’s services are operating as expected. The SIP registration issue appears to be specific to the interaction between Bria iOS and the Twilio registrar. No action is required for other platforms, and Twilio infrastructure is fully functional.

   provider

Corrections

None so far.

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