# Sinch in April 2021: incidents, uptime and changes

> Sinch in April 2021: 23 incidents on its status page (3 major or critical), 98.78% free of major or critical incidents (vendor-reported). From Rewindex’s archive of Sinch’s status, pricing and policy pages.

Canonical: https://rewindex.com/company/sinch/2021/04
Last updated: 2021-05-01T00:00:00Z

- Incidents posted: 23 (major/critical: 3) · Maintenance: 34
- By vendor impact label: major 3, minor 17, none 3
- Uptime (vendor-reported): 98.78% free of major/critical incidents, 59.43% free of any incident; outage time 8 h 44 min, incident time 12.2 days
- Price changes: 0 · Pricing/legal/trust page changes: 0 · Deprecations: 0 · CVEs: 0
- Previous month: [March 2021](https://rewindex.com/company/sinch/2021/03.md) · Next: [May 2021](https://rewindex.com/company/sinch/2021/05.md) · [All months](https://rewindex.com/company/sinch/reports.md) · [Sinch](https://rewindex.com/company/sinch.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 |
| --- | --- | --- | --- | --- | --- |
| [Sinch Service Notification - AU Service Degradation](https://rewindex.com/company/sinch/incidents/74kcd4hphzzl.md) | major | 2021-04-19 22:37 UTC | 2021-04-20 00:09 UTC | 1.5 h | resolved |
| [Delivery Issue Pakistan - Jazz](https://rewindex.com/company/sinch/incidents/9wschylcvypl.md) | major | 2021-04-26 20:14 UTC | 2021-04-27 00:57 UTC | 4.7 h | resolved |
| [Delivery Issue Pakistan - Jazz](https://rewindex.com/company/sinch/incidents/d58qpt268185.md) | major | 2021-04-28 19:34 UTC | 2021-04-28 22:03 UTC | 2.5 h | resolved |

## All incidents

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [Delivery Issue- Bell Canada - CA](https://rewindex.com/company/sinch/incidents/yt5jgj291k42.md) | minor | 2021-04-01 21:40 UTC | 2021-04-02 04:02 UTC | 6.4 h | resolved |
| [Delivery Issue- Rogers Wireless and Fido CA](https://rewindex.com/company/sinch/incidents/9ksvbkx09549.md) | minor | 2021-04-02 00:47 UTC | 2021-04-02 01:28 UTC | 41 min | resolved |
| [Delivery Issue - Bell Canada - CA](https://rewindex.com/company/sinch/incidents/9n87fbl24w89.md) | minor | 2021-04-03 19:21 UTC | 2021-04-04 01:27 UTC | 6.1 h | resolved |
| [Sinch Emergency Maintenance - Legacy Atlas SMS1](https://rewindex.com/company/sinch/incidents/vbbr3b3jxv2p.md) | minor | 2021-04-06 05:17 UTC | 2021-04-06 21:04 UTC | 16 h | resolved |
| [Service Notification - Dashboard](https://rewindex.com/company/sinch/incidents/7svpztw0dwdc.md) | minor | 2021-04-06 08:33 UTC | 2021-04-06 09:02 UTC | 29 min | resolved |
| [Service Notification - Dashboard](https://rewindex.com/company/sinch/incidents/rwv623rq4n3j.md) | minor | 2021-04-06 08:44 UTC | 2021-04-06 09:02 UTC | 18 min | resolved |
| [Whatsapp Connectivity - EU endpoint](https://rewindex.com/company/sinch/incidents/chv0shtfqlnf.md) | none | 2021-04-06 09:20 UTC | 2021-04-06 10:13 UTC | 53 min | resolved |
| [Sinch Operator Notification - T-Mobile US](https://rewindex.com/company/sinch/incidents/m0b42y8w57z1.md) | none | 2021-04-07 13:55 UTC | 2021-04-07 15:08 UTC | 1.2 h | resolved |
| [Operator Notification: Celcom Malaysia](https://rewindex.com/company/sinch/incidents/rzk3kz1yqm4c.md) | minor | 2021-04-09 14:13 UTC | 2021-04-12 00:18 UTC | 2 d | resolved |
| [Delivery Issues - Telekom Germany](https://rewindex.com/company/sinch/incidents/rp49d59t9g0f.md) | minor | 2021-04-11 07:06 UTC | 2021-04-11 10:00 UTC | 2.9 h | resolved |
| [Delivery Issues Bolivia - Tigo](https://rewindex.com/company/sinch/incidents/zjdr2hcwh4cx.md) | minor | 2021-04-14 20:29 UTC | 2021-04-15 19:05 UTC | 23 h | resolved |
| [Outage - Rogers Wireless Canada](https://rewindex.com/company/sinch/incidents/xlx5sr63ntwp.md) | minor | 2021-04-19 06:58 UTC | 2021-04-20 08:02 UTC | 25 h | resolved |
| [Sinch Service Notification - AU Service Degradation](https://rewindex.com/company/sinch/incidents/74kcd4hphzzl.md) | major | 2021-04-19 22:37 UTC | 2021-04-20 00:09 UTC | 1.5 h | resolved |
| [Service Notification - Data Calling degradation](https://rewindex.com/company/sinch/incidents/clwpz3j3lyrn.md) | minor | 2021-04-20 14:04 UTC | 2021-04-20 15:41 UTC | 1.6 h | resolved |
| [Delivery Issues Turkey](https://rewindex.com/company/sinch/incidents/dgywgcrr9b8w.md) | minor | 2021-04-22 12:26 UTC | 2021-04-23 01:08 UTC | 13 h | resolved |
| [Operator Notification - Celcom Malaysia](https://rewindex.com/company/sinch/incidents/4msgt80bjxz0.md) | minor | 2021-04-24 02:22 UTC | 2021-04-24 09:19 UTC | 7.0 h | resolved |
| [Delivery Issue - Rogers Wireless and Fido CA](https://rewindex.com/company/sinch/incidents/kr1tngllcr8c.md) | minor | 2021-04-24 16:25 UTC | 2021-04-24 23:20 UTC | 6.9 h | resolved |
| [Delivery Issue Pakistan - Jazz](https://rewindex.com/company/sinch/incidents/9wschylcvypl.md) | major | 2021-04-26 20:14 UTC | 2021-04-27 00:57 UTC | 4.7 h | resolved |
| [Sinch Service Notification - REST API, CA](https://rewindex.com/company/sinch/incidents/1lt5jdlqzd6v.md) | none | 2021-04-27 09:21 UTC | 2021-04-27 09:21 UTC | 0 min | resolved |
| [Service Notification - Data Calling degradation](https://rewindex.com/company/sinch/incidents/cybkr096glrh.md) | minor | 2021-04-28 08:46 UTC | 2021-04-28 12:29 UTC | 3.7 h | resolved |
| [Delivery Issue Pakistan - Jazz](https://rewindex.com/company/sinch/incidents/d58qpt268185.md) | major | 2021-04-28 19:34 UTC | 2021-04-28 22:03 UTC | 2.5 h | resolved |
| [Delivery Issue Iraq - Asiacell](https://rewindex.com/company/sinch/incidents/whqd50np2wqw.md) | minor | 2021-04-29 07:48 UTC | 2021-04-29 13:27 UTC | 5.7 h | resolved |
| [Delivery Issue France - Orange](https://rewindex.com/company/sinch/incidents/dbkc8nh6kqw0.md) | minor | 2021-04-30 15:05 UTC | 2021-04-30 15:33 UTC | 28 min | resolved |

## Maintenance

| Incident | Impact (vendor label) | Started (UTC) | Resolved (UTC) | Duration | Status |
| --- | --- | --- | --- | --- | --- |
| [\[Scheduled\] Scheduled Network Maintenance - Sinch Legacy Atlas LON3 Site](https://rewindex.com/company/sinch/incidents/wq7hfssh3lfs.md) | maintenance | 2021-04-06 02:00 UTC | 2021-04-06 04:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/d6r2z6m5vfr2.md) | maintenance | 2021-04-06 06:00 UTC | 2021-04-06 13:01 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/0m11q112ngn2.md) | maintenance | 2021-04-07 04:00 UTC | 2021-04-07 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Planned Maintenance - REST API](https://rewindex.com/company/sinch/incidents/mqrq23mmbn41.md) | maintenance | 2021-04-07 08:00 UTC | 2021-04-07 09:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/d6h8px3mflk0.md) | maintenance | 2021-04-08 04:02 UTC | 2021-04-08 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] Scheduled Network Maintenance - Sinch Legacy Atlas IAD3 Site](https://rewindex.com/company/sinch/incidents/ybtjg0jjvcjy.md) | maintenance | 2021-04-08 08:00 UTC | 2021-04-08 10:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/qv3gzvr8z7th.md) | maintenance | 2021-04-12 04:01 UTC | 2021-04-12 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/ttx16rrc6mfy.md) | maintenance | 2021-04-13 04:01 UTC | 2021-04-13 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] WhatsApp Routine Maintenance - EU](https://rewindex.com/company/sinch/incidents/dxk2j48vjx2h.md) | maintenance | 2021-04-13 08:00 UTC | 2021-04-13 09:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] WhatsApp Routine Maintenance - US](https://rewindex.com/company/sinch/incidents/yjh0lnc901xp.md) | maintenance | 2021-04-13 10:00 UTC | 2021-04-13 11:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Sinch Scheduled Maintenance - US1 Site](https://rewindex.com/company/sinch/incidents/60hvy0lz3m06.md) | maintenance | 2021-04-14 08:00 UTC | 2021-04-14 11:00 UTC | 3.0 h | resolved |
| [Sinch Operator Notification - Sprint US](https://rewindex.com/company/sinch/incidents/7n36m573rmyg.md) | maintenance | 2021-04-14 19:19 UTC | 2021-04-24 14:09 UTC | 10 d | resolved |
| [\[Scheduled\] External Maintenance - US Long Number Provider](https://rewindex.com/company/sinch/incidents/n6lkxn6pfr89.md) | maintenance | 2021-04-19 04:00 UTC | 2021-04-19 06:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/rqdf29f1jjx8.md) | maintenance | 2021-04-19 05:00 UTC | 2021-04-19 10:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/2ydlwpmh01zv.md) | maintenance | 2021-04-21 04:00 UTC | 2021-04-21 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/ggmrmbf335hh.md) | maintenance | 2021-04-21 05:02 UTC | 2021-04-21 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Scheduled Maintenance - Verification Instance Migration](https://rewindex.com/company/sinch/incidents/ypdzjljnlq6p.md) | maintenance | 2021-04-21 08:00 UTC | 2021-04-21 09:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/km0zbxzmhm35.md) | maintenance | 2021-04-23 04:00 UTC | 2021-04-23 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - AT&T - US](https://rewindex.com/company/sinch/incidents/8jcw38kbb1gy.md) | maintenance | 2021-04-26 04:00 UTC | 2021-04-26 11:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/j3dhvqk8jk4p.md) | maintenance | 2021-04-26 05:02 UTC | 2021-04-26 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] External Maintenance - US Cellular](https://rewindex.com/company/sinch/incidents/j8ft0bmg1wkt.md) | maintenance | 2021-04-27 06:01 UTC | 2021-04-27 10:00 UTC | 4.0 h | resolved |
| [\[Scheduled\] \[SSL Certificate Renewal and Installation\] WhatsApp EU API Gateway - 27th April 2021 @ 8:00-9:00 UTC](https://rewindex.com/company/sinch/incidents/fgf0jr85vd0l.md) | maintenance | 2021-04-27 08:00 UTC | 2021-04-27 09:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] \[SSL Certificate Renewal and Installation\] WhatsApp US API Gateway - 27th April 2021 @ 10:00-11:00 UTC](https://rewindex.com/company/sinch/incidents/0b63fn7ywyn7.md) | maintenance | 2021-04-27 10:02 UTC | 2021-04-27 11:00 UTC | 58 min | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/y8wr033fb9gg.md) | maintenance | 2021-04-28 05:01 UTC | 2021-04-28 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Scheduled Reach Platform Maintenance](https://rewindex.com/company/sinch/incidents/h981082n0413.md) | maintenance | 2021-04-28 07:00 UTC | 2021-04-28 12:00 UTC | 5.0 h | resolved |
| [\[Scheduled\] Sinch Maintenance Notification on our CA sites loadbalancers](https://rewindex.com/company/sinch/incidents/37lg8pm0sl9d.md) | maintenance | 2021-04-28 08:00 UTC | 2021-04-28 09:00 UTC | 1.0 h | resolved |
| [\[Scheduled\] Sinch Maintenance Notifcation - Verification Services](https://rewindex.com/company/sinch/incidents/j34cj3r1wbd5.md) | maintenance | 2021-04-28 08:00 UTC | 2021-04-28 09:01 UTC | 1.0 h | resolved |
| [\[Scheduled\] Scheduled Maintenance - Calling Services](https://rewindex.com/company/sinch/incidents/zy2njf1prfbj.md) | maintenance | 2021-04-29 03:00 UTC | 2021-04-29 07:30 UTC | 4.5 h | resolved |
| [\[Scheduled\] External Maintenance - Movistar - Chile](https://rewindex.com/company/sinch/incidents/86l4gg9gvnt1.md) | maintenance | 2021-04-29 03:00 UTC | 2021-04-29 10:00 UTC | 7.0 h | resolved |
| [\[Scheduled\] External Maintenance - T-Mobile US](https://rewindex.com/company/sinch/incidents/rg81lvfscf3m.md) | maintenance | 2021-04-29 05:00 UTC | 2021-04-29 11:00 UTC | 6.0 h | resolved |
| [\[Scheduled\] Customer Portal routine maintenance](https://rewindex.com/company/sinch/incidents/x6l15x58158f.md) | maintenance | 2021-04-29 05:01 UTC | 2021-04-29 07:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Scheduled Network Maintenance - Sinch Legacy Atlas DFW3 Site](https://rewindex.com/company/sinch/incidents/ssg5fkz7j03z.md) | maintenance | 2021-04-29 09:00 UTC | 2021-04-29 11:00 UTC | 2.0 h | resolved |
| [\[Scheduled\] Sinch Maintenance Notification on our BR sites loadbalancers](https://rewindex.com/company/sinch/incidents/z49rzmwwd9yv.md) | maintenance | 2021-04-29 15:01 UTC | 2021-04-29 16:00 UTC | 59 min | resolved |
| [\[Scheduled\] Sinch Maintenance Notification on our AU sites loadbalancers](https://rewindex.com/company/sinch/incidents/hchllr70w60h.md) | maintenance | 2021-04-29 15:01 UTC | 2021-04-29 16:00 UTC | 59 min | resolved |

## Cite this

Sinch posted 23 status incidents in April 2021 (3 major or critical); 0 price changes and 0 notable page changes observed.

- Canonical URL: https://rewindex.com/company/sinch/2021/04
- Citation: Sinch, “Sinch in April 2021” (2021-04-01 00:00 UTC). Archived by Rewindex: https://rewindex.com/company/sinch/2021/04 (CC BY 4.0).
- Markdown link: `[Sinch: Sinch in April 2021 (2021-04-01)](https://rewindex.com/company/sinch/2021/04)`


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Canonical: https://rewindex.com/company/sinch/2021/04 · Markdown: https://rewindex.com/company/sinch/2021/04.md · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T14:09:57.428Z