# Twilio in January 2021: incidents, uptime and changes

> Twilio in January 2021: 104 incidents on its status page (1 major or critical), 99.65% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Twilio’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/twilio/2021/01
Last updated: 2021-02-01T00:06:00Z

- Incidents posted: 104 (major/critical: 1) · Maintenance: 39
- By vendor impact label: critical 1, minor 85, none 18
- Uptime (vendor-reported): 99.65% free of major/critical incidents, 27.19% free of any incident; outage time 2 h 36 min, incident time 22.6 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [December 2020](https://rewindex.com/company/twilio/2020/12.md) · Next: [February 2021](https://rewindex.com/company/twilio/2021/02.md) · [All months](https://rewindex.com/company/twilio/reports.md) · [Twilio](https://rewindex.com/company/twilio.md)

_Uptime: Derived from the incidents the vendor posted on its own status page, not measured by us. A minute counts as an outage minute when a major or critical incident (as the vendor labelled it) was open; incident minutes include minor ones too. Maintenance and incidents marked "no impact" are left out, overlapping incidents are merged, a resolved incident counts for at most 7 days, and one still open with no resolution counts for at most 24 hours._

## Major and critical incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [On Call Engineers are Investigating Issues with Voice Insights in Console and API, Programmable Video Log Analyzer, and Twilio Platform Debugger](https://rewindex.com/company/twilio/incidents/j1kn7z8vzfcq.md) | critical | 2021-01-26 01:00 UTC | 2021-01-26 03:36 UTC | 2.6 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [MMS Delivery Delays to AT&T and Verizon US from a Subset of Shortcodes](https://rewindex.com/company/twilio/incidents/n8kz7tx8czrc.md) | minor | 2021-01-01 16:14 UTC | 2021-01-03 14:37 UTC | 46 h | resolved |
| [SMS Delivery Delays to Bangladesh Robi](https://rewindex.com/company/twilio/incidents/n8wq1047v7mt.md) | minor | 2021-01-03 14:59 UTC | 2021-01-04 00:08 UTC | 9.2 h | resolved |
| [MMS Delivery Delays on US AT&T](https://rewindex.com/company/twilio/incidents/3jpm0ptjv4p2.md) | minor | 2021-01-03 20:29 UTC | 2021-01-04 03:29 UTC | 7.0 h | resolved |
| [SMS Delivery Delays to 'Personal' - Argentina](https://rewindex.com/company/twilio/incidents/qgltcqdtnqgf.md) | minor | 2021-01-04 11:44 UTC | 2021-01-04 13:19 UTC | 1.6 h | resolved |
| [SMS Delivery Delays to Personal Network in Argentina](https://rewindex.com/company/twilio/incidents/ygnxf13zjmxr.md) | minor | 2021-01-04 16:17 UTC | 2021-01-04 19:44 UTC | 3.5 h | resolved |
| [SMS Delivery Delay to AWCC Afghanistan](https://rewindex.com/company/twilio/incidents/m0gn33xqq5kh.md) | minor | 2021-01-05 07:05 UTC | 2021-01-05 12:47 UTC | 5.7 h | resolved |
| [High Packet Loss for Voice calls to Poland](https://rewindex.com/company/twilio/incidents/02kx7158xvkn.md) | minor | 2021-01-05 09:28 UTC | 2021-01-05 14:52 UTC | 5.4 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/ct426z9t08g5.md) | none | 2021-01-05 11:19 UTC | 2021-01-05 11:41 UTC | 22 min | resolved |
| [Video Log Analyzer Data is Delayed](https://rewindex.com/company/twilio/incidents/sz9s40xfj021.md) | minor | 2021-01-05 20:44 UTC | 2021-01-06 01:22 UTC | 4.6 h | resolved |
| [Issue with Twilio Debugger](https://rewindex.com/company/twilio/incidents/gcn5xg3g38y0.md) | minor | 2021-01-05 20:50 UTC | 2021-01-06 00:36 UTC | 3.8 h | resolved |
| [MMS Delivery Delays on AT&T](https://rewindex.com/company/twilio/incidents/v05dfpf67pzz.md) | minor | 2021-01-05 20:59 UTC | 2021-01-05 21:31 UTC | 32 min | resolved |
| [Address Verification Functionality of the Phone Numbers API is Degraded](https://rewindex.com/company/twilio/incidents/g79sw87ccgxs.md) | minor | 2021-01-06 21:43 UTC | 2021-01-06 22:14 UTC | 31 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/v0kf2krjks6c.md) | none | 2021-01-07 11:53 UTC | 2021-01-07 12:44 UTC | 51 min | resolved |
| [SMS Delivery Delays to Meteor Network in Ireland](https://rewindex.com/company/twilio/incidents/bz25jfpk0sxp.md) | minor | 2021-01-07 14:08 UTC | 2021-01-07 16:05 UTC | 1.9 h | resolved |
| [Issue with Usage Records API](https://rewindex.com/company/twilio/incidents/sksp43vhw1ls.md) | none | 2021-01-07 21:34 UTC | 2021-01-07 22:37 UTC | 1.1 h | resolved |
| [SMS Delivery Failures to Globe Network Philippines](https://rewindex.com/company/twilio/incidents/ddxmz84ct2hz.md) | minor | 2021-01-08 04:38 UTC | 2021-01-08 06:10 UTC | 1.5 h | resolved |
| [Inbound Call Failures to a Subset of Twilio UK Phone Numbers](https://rewindex.com/company/twilio/incidents/x6nfdszjy6r8.md) | minor | 2021-01-08 11:44 UTC | 2021-01-11 20:07 UTC | 3 d | resolved |
| [Short Code Payment Processing Delays for a Subset of Customers](https://rewindex.com/company/twilio/incidents/9nmw3vwwpphd.md) | minor | 2021-01-08 15:45 UTC | 2021-01-09 01:13 UTC | 9.5 h | resolved |
| [Possible Performance Delays with Video Recordings and Compositions API](https://rewindex.com/company/twilio/incidents/mmm6rsqc34w9.md) | minor | 2021-01-08 18:02 UTC | 2021-01-08 18:20 UTC | 18 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/qykb3ms3tjx9.md) | none | 2021-01-09 18:44 UTC | 2021-01-09 19:09 UTC | 25 min | resolved |
| [SMS Delivery Delay To Mobilis Algeria](https://rewindex.com/company/twilio/incidents/h4ck8wy2jdkr.md) | minor | 2021-01-09 19:03 UTC | 2021-01-10 12:41 UTC | 18 h | resolved |
| [SMS Delivery Delays over local Brazilian long code numbers](https://rewindex.com/company/twilio/incidents/qmm9rnts2d3g.md) | minor | 2021-01-11 13:18 UTC | 2021-01-11 22:27 UTC | 9.2 h | resolved |
| [SMS Delivery Delays When Sending Messages to Robi Bangladesh](https://rewindex.com/company/twilio/incidents/4bbpsc4yp6mz.md) | minor | 2021-01-11 15:01 UTC | 2021-01-11 18:49 UTC | 3.8 h | resolved |
| [SMS Delivery Delays When Sending Messages to Congo Orange](https://rewindex.com/company/twilio/incidents/5x5gnzhs3p4b.md) | minor | 2021-01-11 15:08 UTC | 2021-01-13 07:00 UTC | 40 h | resolved |
| [SMS Delivery Delays When Sending Messages to the Claro Network in Brazil](https://rewindex.com/company/twilio/incidents/gr1yxfjwtznj.md) | minor | 2021-01-11 16:35 UTC | 2021-01-11 19:37 UTC | 3.0 h | resolved |
| [Some Programmable Wireless Devices in the UK May Be Unable to Connect to Networks](https://rewindex.com/company/twilio/incidents/wc7520vvhfsn.md) | minor | 2021-01-11 17:49 UTC | 2021-01-12 23:44 UTC | 30 h | resolved |
| [SMS Delivery Delays To Egypt](https://rewindex.com/company/twilio/incidents/998n1m6d060h.md) | minor | 2021-01-11 20:22 UTC | 2021-01-11 23:31 UTC | 3.1 h | resolved |
| [Delays in Downloading Voice Recordings](https://rewindex.com/company/twilio/incidents/qkb3gc9kfddk.md) | minor | 2021-01-11 22:50 UTC | 2021-01-12 00:09 UTC | 1.3 h | resolved |
| [MMS Converter Failing to Convert Messages to Mexico](https://rewindex.com/company/twilio/incidents/dj1dy9ptm32r.md) | minor | 2021-01-11 23:39 UTC | 2021-01-12 00:50 UTC | 1.2 h | resolved |
| [Downloading mp3 Recordings Fail if the Download Takes Over 30 Seconds](https://rewindex.com/company/twilio/incidents/n4pk4ls3hr9t.md) | minor | 2021-01-12 14:42 UTC | 2021-01-12 17:14 UTC | 2.5 h | resolved |
| [SMS Delivery Delays When Sending Messages to Pakistan - Ufone](https://rewindex.com/company/twilio/incidents/r7tn6f1rwjht.md) | minor | 2021-01-12 17:47 UTC | 2021-01-12 21:34 UTC | 3.8 h | resolved |
| [SMS Delivery Delays When Sending Messages to Syrian Arab Republic MTN Network](https://rewindex.com/company/twilio/incidents/7y1p51w7lqst.md) | minor | 2021-01-12 19:08 UTC | 2021-01-12 22:00 UTC | 2.9 h | resolved |
| [SMS Delivery Delays When Sending Messages to Egypt Vodafone Network](https://rewindex.com/company/twilio/incidents/1xfc7sk0r3bd.md) | minor | 2021-01-12 19:42 UTC | 2021-01-14 18:22 UTC | 47 h | resolved |
| [Flex Agents Unable to Change Status](https://rewindex.com/company/twilio/incidents/ds8k66l08f8q.md) | minor | 2021-01-12 22:47 UTC | 2021-01-13 02:29 UTC | 3.7 h | resolved |
| [Intermittent Failures on Twilio Functions](https://rewindex.com/company/twilio/incidents/7l88lqy57kmh.md) | minor | 2021-01-12 22:49 UTC | 2021-01-13 01:54 UTC | 3.1 h | resolved |
| [Delays in Bulk Exports](https://rewindex.com/company/twilio/incidents/gj587sv1scsc.md) | minor | 2021-01-12 23:37 UTC | 2021-01-19 01:00 UTC | 6 d | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/w9nmh0004n8m.md) | none | 2021-01-13 00:08 UTC | 2021-01-13 00:18 UTC | 10 min | resolved |
| [Console and API Billing Delays](https://rewindex.com/company/twilio/incidents/whrz9s2mmt8h.md) | minor | 2021-01-13 15:47 UTC | 2021-01-13 20:18 UTC | 4.5 h | resolved |
| [Inbound SMS Failures to Twilio Philippines Phone Numbers](https://rewindex.com/company/twilio/incidents/b1pqp21hmwp2.md) | minor | 2021-01-13 19:02 UTC | 2021-01-13 22:55 UTC | 3.9 h | resolved |
| [Subset of Call Data Not Deleted](https://rewindex.com/company/twilio/incidents/9r9cxpcznp6f.md) | minor | 2021-01-14 16:02 UTC | 2021-01-14 17:23 UTC | 1.4 h | resolved |
| [SMS Delivery Failures When Sending Messages to Some Brazil Networks from Local Longcodes](https://rewindex.com/company/twilio/incidents/mw2flp0w9zv1.md) | minor | 2021-01-14 18:58 UTC | 2021-01-15 18:36 UTC | 24 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/wzkn33qf7gdy.md) | none | 2021-01-15 00:51 UTC | 2021-01-15 01:01 UTC | 10 min | resolved |
| [SMS Delivery Delays to Sri-Lanka Mobitel](https://rewindex.com/company/twilio/incidents/tw8phpj0hk3z.md) | minor | 2021-01-15 05:19 UTC | 2021-01-15 08:16 UTC | 3.0 h | resolved |
| [SMS Delivery Delays to H3G UK](https://rewindex.com/company/twilio/incidents/w0qvzcrzq3k7.md) | minor | 2021-01-15 08:44 UTC | 2021-01-15 13:27 UTC | 4.7 h | resolved |
| [Charge Payments Made With Pay Verb Using CardConnect Payment Provider are Failing](https://rewindex.com/company/twilio/incidents/ghrmh4dq0w9n.md) | minor | 2021-01-15 18:24 UTC | 2021-01-15 19:59 UTC | 1.6 h | resolved |
| [SMS Delivery Delays and Failures To and From H3G UK](https://rewindex.com/company/twilio/incidents/gvn244knnyl2.md) | minor | 2021-01-16 08:46 UTC | 2021-01-16 17:30 UTC | 8.7 h | resolved |
| [SMS Delivery Failures on DU Network in United Arab Emirates](https://rewindex.com/company/twilio/incidents/mz3p2fyrby48.md) | minor | 2021-01-17 06:19 UTC | 2021-01-17 09:02 UTC | 2.7 h | resolved |
| [SMS Delivery Delays to All Networks in Brazil](https://rewindex.com/company/twilio/incidents/6482wr74r8f4.md) | minor | 2021-01-17 09:26 UTC | 2021-01-17 19:18 UTC | 9.9 h | resolved |
| [SMS Delivery Failures to Robi Network in Bangladesh](https://rewindex.com/company/twilio/incidents/k3g0h3tsnj7d.md) | minor | 2021-01-17 10:09 UTC | 2021-01-17 18:28 UTC | 8.3 h | resolved |
| [SMS Delivery Receipt Delays to Brazil Over a Subset of Short Codes](https://rewindex.com/company/twilio/incidents/h610v11fppkq.md) | minor | 2021-01-17 11:38 UTC | 2021-01-17 19:16 UTC | 7.6 h | resolved |
| [SMS Delivery Delays to DigiTel Venezuela](https://rewindex.com/company/twilio/incidents/335cz5pyd12g.md) | minor | 2021-01-17 18:58 UTC | 2021-01-19 02:03 UTC | 31 h | resolved |
| [SMS Delivery Delays to Philippines Globe Network](https://rewindex.com/company/twilio/incidents/pfkzwfrgjxyf.md) | minor | 2021-01-18 04:56 UTC | 2021-01-18 08:00 UTC | 3.1 h | resolved |
| [SMS Delivery Failures To DU United Arab Emirates](https://rewindex.com/company/twilio/incidents/czyp341qy222.md) | minor | 2021-01-18 10:17 UTC | 2021-01-18 14:33 UTC | 4.3 h | resolved |
| [Message Delivery Delays To Syrian Arab Republic](https://rewindex.com/company/twilio/incidents/cmk8c5yqxff2.md) | minor | 2021-01-18 11:12 UTC | 2021-01-18 14:45 UTC | 3.5 h | resolved |
| [Inbound Call Failures to Local Twilio Spanish Phone Numbers](https://rewindex.com/company/twilio/incidents/b03ck54jvbkt.md) | minor | 2021-01-18 12:23 UTC | 2021-01-19 10:05 UTC | 22 h | resolved |
| [SMS Delivery Report Delays when sending to Brazil from a Subset of Short Codes](https://rewindex.com/company/twilio/incidents/p4pqtbgzgrj1.md) | none | 2021-01-18 22:30 UTC | 2021-01-18 22:30 UTC | 0 min | resolved |
| [SMS Delivery Delays to Orange Network in Tunisia](https://rewindex.com/company/twilio/incidents/hcn0nvdnbzgw.md) | minor | 2021-01-19 15:00 UTC | 2021-01-19 20:04 UTC | 5.1 h | resolved |
| [SMS Delivery Delays to US Verizon Network](https://rewindex.com/company/twilio/incidents/b6v9qnsd7krz.md) | minor | 2021-01-19 17:21 UTC | 2021-01-19 17:44 UTC | 23 min | resolved |
| [Elevated HTTP 500 Errors Affecting Programmable Voice Recording Downloads](https://rewindex.com/company/twilio/incidents/5zmwx4vhz568.md) | none | 2021-01-19 19:58 UTC | 2021-01-19 19:58 UTC | 0 min | resolved |
| [SMS Delivery Failures to Chile Movistar and Virgin Mobile](https://rewindex.com/company/twilio/incidents/9d11wkmjvwgk.md) | minor | 2021-01-19 21:15 UTC | 2021-01-21 01:43 UTC | 28 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/7sbgxphnmwj6.md) | none | 2021-01-20 00:07 UTC | 2021-01-20 00:31 UTC | 24 min | resolved |
| [SMS Delivery Delays to Virgin Mobile Chile](https://rewindex.com/company/twilio/incidents/06rt3pbtn0xd.md) | minor | 2021-01-20 04:36 UTC | 2021-01-20 17:10 UTC | 13 h | resolved |
| [SMS Delivery Failures to United Arab Emirates DU](https://rewindex.com/company/twilio/incidents/hm5chmgsj4sy.md) | minor | 2021-01-20 09:47 UTC | 2021-01-20 14:06 UTC | 4.3 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/34d78n87b9mq.md) | none | 2021-01-20 13:59 UTC | 2021-01-20 14:02 UTC | 3 min | resolved |
| [Alert Trigger Emails not Sent](https://rewindex.com/company/twilio/incidents/961kzy5qmxkc.md) | none | 2021-01-20 20:26 UTC | 2021-01-20 20:26 UTC | 0 min | resolved |
| [SMS Delivery Failures to Orange Network in Congo](https://rewindex.com/company/twilio/incidents/l2whxtf28qlt.md) | minor | 2021-01-20 20:44 UTC | 2021-01-21 00:04 UTC | 3.3 h | resolved |
| [A Subset of Voice Calls Disconnecting to Twilio US Toll-Free Numbers](https://rewindex.com/company/twilio/incidents/x105tw97vtw0.md) | minor | 2021-01-20 23:26 UTC | 2021-01-21 01:04 UTC | 1.6 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/0g5bj2sym0jj.md) | minor | 2021-01-22 05:27 UTC | 2021-01-22 05:32 UTC | 5 min | resolved |
| [SMS Delivery Delays to MTN Nigeria](https://rewindex.com/company/twilio/incidents/bf5ms6y2n803.md) | minor | 2021-01-22 11:59 UTC | 2021-01-22 13:59 UTC | 2.0 h | resolved |
| [SMS Delivery Delays to US T-Mobile From a Subset of Twilio Shortcodes](https://rewindex.com/company/twilio/incidents/b9jf2sktysfq.md) | minor | 2021-01-22 17:11 UTC | 2021-01-23 10:04 UTC | 17 h | resolved |
| [Mailing Address Validation Issues in the Twilio Console for a Subset of Customers](https://rewindex.com/company/twilio/incidents/gsg119shpcfm.md) | minor | 2021-01-23 21:04 UTC | 2021-01-24 09:35 UTC | 13 h | resolved |
| [SMS Delivery Failures to Trinidad and Tobago over TSTT](https://rewindex.com/company/twilio/incidents/h7bk9fbcvcn9.md) | minor | 2021-01-24 20:39 UTC | 2021-01-25 11:05 UTC | 14 h | resolved |
| [SMS Delivery Delays to Salt Network in Switzerland](https://rewindex.com/company/twilio/incidents/rzb47sqvx6j9.md) | minor | 2021-01-25 15:16 UTC | 2021-01-26 03:53 UTC | 13 h | resolved |
| [TaskRouter and Flex Degraded](https://rewindex.com/company/twilio/incidents/z8p9rl8kn7hw.md) | none | 2021-01-25 17:56 UTC | 2021-01-25 18:50 UTC | 54 min | resolved |
| [Functions Invocations Degraded](https://rewindex.com/company/twilio/incidents/m7b6th2yrnw0.md) | none | 2021-01-25 19:26 UTC | 2021-01-25 20:02 UTC | 36 min | resolved |
| [On Call Engineers are Investigating an Issue with Authy 2FA](https://rewindex.com/company/twilio/incidents/c95qm38rj4mg.md) | minor | 2021-01-25 21:11 UTC | 2021-01-25 21:28 UTC | 17 min | resolved |
| [Twilio Debugger & Alerts Incident Now Resolved](https://rewindex.com/company/twilio/incidents/rmsf6k7vr80s.md) | none | 2021-01-25 22:16 UTC | 2021-01-25 22:16 UTC | 0 min | resolved |
| [SMS Delivery Failures to the MTN Irancell in Iran](https://rewindex.com/company/twilio/incidents/3d6cdp99glt5.md) | minor | 2021-01-25 22:49 UTC | 2021-01-26 00:35 UTC | 1.8 h | resolved |
| [On Call Engineers are Investigating Issues with Voice Insights in Console and API, Programmable Video Log Analyzer, and Twilio Platform Debugger](https://rewindex.com/company/twilio/incidents/j1kn7z8vzfcq.md) | critical | 2021-01-26 01:00 UTC | 2021-01-26 03:36 UTC | 2.6 h | resolved |
| [SMS Delivery Delays to MTN Benin](https://rewindex.com/company/twilio/incidents/p103nd46y1sc.md) | minor | 2021-01-26 09:02 UTC | 2021-01-26 09:21 UTC | 19 min | resolved |
| [SMS Delivery Delays to Congo Networks Orange and Tigo](https://rewindex.com/company/twilio/incidents/cf5r4s9489zn.md) | minor | 2021-01-26 17:55 UTC | 2021-01-26 22:30 UTC | 4.6 h | resolved |
| [Lookup API Error Rate Elevated](https://rewindex.com/company/twilio/incidents/sqzw8g9y14wf.md) | none | 2021-01-26 19:04 UTC | 2021-01-26 19:04 UTC | 0 min | resolved |
| [Programmable Voice TwiML Degradation](https://rewindex.com/company/twilio/incidents/40dssdjfcv6p.md) | none | 2021-01-26 20:00 UTC | 2021-01-26 20:00 UTC | 0 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/dh7f67l5rnyk.md) | none | 2021-01-26 20:39 UTC | 2021-01-26 21:03 UTC | 24 min | resolved |
| [SMS Delivery Delays to Brazilian Local Longcode](https://rewindex.com/company/twilio/incidents/pbg75rqc82lv.md) | minor | 2021-01-26 21:22 UTC | 2021-01-27 15:16 UTC | 18 h | resolved |
| [SMS Delivery Delays To Colombia Tigo](https://rewindex.com/company/twilio/incidents/6qcqbxhdd6p4.md) | minor | 2021-01-26 21:52 UTC | 2021-01-27 07:29 UTC | 9.6 h | resolved |
| [SMS Delivery Failures on Lleida Spain](https://rewindex.com/company/twilio/incidents/pysqxd6drw3v.md) | minor | 2021-01-27 12:23 UTC | 2021-01-27 13:21 UTC | 58 min | resolved |
| [T-Mobile, US SMS Delivery Delays via Short Codes and Toll-Free Numbers](https://rewindex.com/company/twilio/incidents/8961zbmdjfxr.md) | minor | 2021-01-27 15:25 UTC | 2021-01-27 16:42 UTC | 1.3 h | resolved |
| [SMS Delivery Delays to TuniCell Tunisia](https://rewindex.com/company/twilio/incidents/4ssk5szfj49l.md) | minor | 2021-01-27 19:39 UTC | 2021-01-27 23:00 UTC | 3.4 h | resolved |
| [SMS Delivery Delays from Pre-registered Sender IDs to Oman Nawras](https://rewindex.com/company/twilio/incidents/fxc4ycl2mcjb.md) | minor | 2021-01-27 20:26 UTC | 2021-01-28 04:14 UTC | 7.8 h | resolved |
| [Programmable Voice High Risk Flagging of Some US and UK Mobile Numbers](https://rewindex.com/company/twilio/incidents/r84jgpwvp7m4.md) | minor | 2021-01-27 21:43 UTC | 2021-01-28 02:02 UTC | 4.3 h | resolved |
| [Duplicate Messages sent with Autopilot](https://rewindex.com/company/twilio/incidents/mz3l7gt926rt.md) | minor | 2021-01-28 16:13 UTC | 2021-01-28 18:30 UTC | 2.3 h | resolved |
| [SMS Delivery Failures on TSTT and B-Mobile in Trinidad and Tobago](https://rewindex.com/company/twilio/incidents/227zhnnfxskx.md) | minor | 2021-01-28 16:24 UTC | 2021-01-29 14:54 UTC | 23 h | resolved |
| [Programmable Messaging Channels and Whatsapp Delays and Failures](https://rewindex.com/company/twilio/incidents/j64178n0z7ck.md) | minor | 2021-01-28 23:06 UTC | 2021-01-28 23:43 UTC | 37 min | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/jfsplnk1gvrm.md) | minor | 2021-01-29 03:38 UTC | 2021-01-29 03:51 UTC | 13 min | resolved |
| [SMS Delivery Delays or Failures to Networks in Haryana India](https://rewindex.com/company/twilio/incidents/45y66gk9l2tq.md) | minor | 2021-01-29 17:12 UTC | 2021-01-31 15:11 UTC | 46 h | resolved |
| [SMS Delivery Delays to Mexico Telcel](https://rewindex.com/company/twilio/incidents/s5q326wd2117.md) | minor | 2021-01-29 20:12 UTC | 2021-01-29 21:22 UTC | 1.2 h | resolved |
| [SMS Delivery Delays to Cellular Corp USA](https://rewindex.com/company/twilio/incidents/wkw5wrfwjhws.md) | minor | 2021-01-30 03:07 UTC | 2021-01-30 05:09 UTC | 2.0 h | resolved |
| [Increased Delays Delivering SMS to Brazil, Japan, Russia, and UK from Authy and Verify](https://rewindex.com/company/twilio/incidents/nz5ksd19b9qz.md) | minor | 2021-01-30 16:45 UTC | 2021-01-30 22:11 UTC | 5.4 h | resolved |
| [Inbound Call Failures to a Subset of Twilio UK Phone Numbers](https://rewindex.com/company/twilio/incidents/4hjd1wcr8728.md) | minor | 2021-01-30 22:51 UTC | 2021-01-31 04:20 UTC | 5.5 h | resolved |
| [SMS Delivery Delays to Pakistan Telenor Network](https://rewindex.com/company/twilio/incidents/ljb3nvgn5wjq.md) | minor | 2021-01-31 09:55 UTC | 2021-01-31 15:15 UTC | 5.3 h | resolved |
| [On Call Engineers are Investigating](https://rewindex.com/company/twilio/incidents/b71gh4d66vyj.md) | none | 2021-01-31 10:31 UTC | 2021-01-31 10:41 UTC | 10 min | resolved |
| [Super SIM Connectivity Issues](https://rewindex.com/company/twilio/incidents/glb0lqkvxj6r.md) | minor | 2021-01-31 16:55 UTC | 2021-01-31 21:35 UTC | 4.7 h | resolved |
| [SMS Delivery Delays to Iran](https://rewindex.com/company/twilio/incidents/pm73wq68kk3q.md) | minor | 2021-01-31 21:59 UTC | 2021-02-01 00:06 UTC | 2.1 h | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] SMS Carrier Maintenance - H3G Hongkong](https://rewindex.com/company/twilio/incidents/3zfz5p0xc47l.md) | maintenance | 2021-01-04 17:00 UTC | 2021-01-04 22:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance Etisalat ,UAE](https://rewindex.com/company/twilio/incidents/y017qcqczzbn.md) | maintenance | 2021-01-04 20:00 UTC | 2021-01-05 02:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] UAE SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/skyg1klc6r8s.md) | maintenance | 2021-01-05 20:00 UTC | 2021-01-06 02:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/sx8hzp7k34mn.md) | maintenance | 2021-01-06 05:00 UTC | 2021-01-06 09:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/r8p4v8158xxn.md) | maintenance | 2021-01-06 06:00 UTC | 2021-01-06 13:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Celcom, Malaysia](https://rewindex.com/company/twilio/incidents/cjmy0x6t5p1y.md) | maintenance | 2021-01-06 17:00 UTC | 2021-01-06 18:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - MPT (Myanmar Posts and Telecommunications), Myanmar](https://rewindex.com/company/twilio/incidents/7tbgtw3ck7bn.md) | maintenance | 2021-01-06 17:30 UTC | 2021-01-06 20:30 UTC | 3.0 h | resolved |
| [\[Scheduled\] Canada SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/hsc1mr57vngx.md) | maintenance | 2021-01-07 11:00 UTC | 2021-01-07 11:30 UTC | 30 min | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/17fw8x4tflyr.md) | maintenance | 2021-01-08 03:00 UTC | 2021-01-08 07:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/fwcss45c8r1k.md) | maintenance | 2021-01-08 05:00 UTC | 2021-01-08 07:59 UTC | 3.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/f7k7c20zr26b.md) | maintenance | 2021-01-10 04:01 UTC | 2021-01-10 07:59 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - T-Mobile US](https://rewindex.com/company/twilio/incidents/0w47f7j7nk78.md) | maintenance | 2021-01-11 05:00 UTC | 2021-01-11 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/vgknc9z185mn.md) | maintenance | 2021-01-11 05:00 UTC | 2021-01-11 08:00 UTC | 3.0 h | resolved |
| [\[Scheduled\] France SMS Carrier Maintenance - Bouygues Telecom](https://rewindex.com/company/twilio/incidents/41m0p43h85cd.md) | maintenance | 2021-01-12 23:00 UTC | 2021-01-13 04:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/qv4xmgt3c959.md) | maintenance | 2021-01-13 05:00 UTC | 2021-01-13 09:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/4p3sllqlzd39.md) | maintenance | 2021-01-13 07:00 UTC | 2021-01-13 13:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Indonesia SMS Carrier Maintenance - Indosat Indonesia](https://rewindex.com/company/twilio/incidents/l5wzd3cf8r44.md) | maintenance | 2021-01-13 16:01 UTC | 2021-01-13 22:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/w9hb7xrdjchg.md) | maintenance | 2021-01-13 20:00 UTC | 2021-01-14 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/d07629lqypt8.md) | maintenance | 2021-01-14 04:00 UTC | 2021-01-14 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/lsszncs72pyv.md) | maintenance | 2021-01-18 20:01 UTC | 2021-01-19 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/342svvvzvg6j.md) | maintenance | 2021-01-19 07:00 UTC | 2021-01-19 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Myanmar SMS Carrier Maintenance - Ooredoo](https://rewindex.com/company/twilio/incidents/c5jfn36961hw.md) | maintenance | 2021-01-19 17:32 UTC | 2021-01-19 21:30 UTC | 4.0 h | resolved |
| [\[Scheduled\] Myanmar SMS Carrier Maintenance - Ooredoo](https://rewindex.com/company/twilio/incidents/ktvx47jnyrvp.md) | maintenance | 2021-01-20 17:30 UTC | 2021-01-20 21:30 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/jqrgkvb5pnv4.md) | maintenance | 2021-01-20 20:00 UTC | 2021-01-21 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/2f9k83yl1yhh.md) | maintenance | 2021-01-21 04:03 UTC | 2021-01-21 08:01 UTC | 4.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/99x39zrh8w0d.md) | maintenance | 2021-01-21 07:00 UTC | 2021-01-21 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/6r8h7xg4r0zx.md) | maintenance | 2021-01-22 03:30 UTC | 2021-01-22 07:30 UTC | 4.0 h | resolved |
| [\[Scheduled\] Indonesia SMS Carrier Provider Maintenance](https://rewindex.com/company/twilio/incidents/txj2ty96mfrp.md) | maintenance | 2021-01-25 19:01 UTC | 2021-01-25 23:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/6d6k20h243ld.md) | maintenance | 2021-01-25 20:00 UTC | 2021-01-26 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - AT&T Mexico](https://rewindex.com/company/twilio/incidents/3k841st40f97.md) | maintenance | 2021-01-26 06:02 UTC | 2021-01-26 12:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Planned Maintenance for Programmable Voice Mobile SDK 1.x](https://rewindex.com/company/twilio/incidents/ngdmg71xwv37.md) | maintenance | 2021-01-26 17:00 UTC | 2021-01-26 19:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] US SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/sddtdpqrbf12.md) | maintenance | 2021-01-26 23:00 UTC | 2021-01-27 05:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] SMS Carrier Partner Maintenance - Small US Regional Carriers](https://rewindex.com/company/twilio/incidents/7wr2gvn4rff8.md) | maintenance | 2021-01-27 05:01 UTC | 2021-01-27 09:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Sprint US](https://rewindex.com/company/twilio/incidents/wr6xc28mwl96.md) | maintenance | 2021-01-27 05:01 UTC | 2021-01-27 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] US MMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/lyndbmc8bsd4.md) | maintenance | 2021-01-27 07:01 UTC | 2021-01-27 11:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] Russia SMS Carrier Maintenance - Megafon Russia](https://rewindex.com/company/twilio/incidents/cfp2jc8jpmgb.md) | maintenance | 2021-01-27 20:00 UTC | 2021-01-28 00:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] US Toll-Free SMS Carrier Partner Maintenance](https://rewindex.com/company/twilio/incidents/b1g07967jnn6.md) | maintenance | 2021-01-28 04:00 UTC | 2021-01-28 08:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] SMS Carrier Maintenance - Zain, Saudi Arabia](https://rewindex.com/company/twilio/incidents/kqgrn55ll63q.md) | maintenance | 2021-01-28 23:01 UTC | 2021-01-29 05:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Vietnam SMS Carrier Maintenance - Vietnamobile](https://rewindex.com/company/twilio/incidents/xnzm42vzt66p.md) | maintenance | 2021-01-31 16:32 UTC | 2021-01-31 19:30 UTC | 3.0 h | resolved |

## Cite this

Twilio posted 104 status incidents in January 2021 (1 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/twilio/2021/01
- Citation: Twilio, “Twilio in January 2021” (2021-01-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/2021/01 (CC BY 4.0).
- Markdown link: `[Twilio: Twilio in January 2021 (2021-01-01)](https://rewindex.com/company/twilio/2021/01)`


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Canonical: https://rewindex.com/company/twilio/2021/01 · Markdown: https://rewindex.com/company/twilio/2021/01.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T13:34:14.890Z