Business Phone Systems · reliability comparison
RingCentral vs Zoom Phone: which is more reliable? (2026)
RingCentral is more reliable than Zoom Phone, scoring 63.2 vs 51.9 out of 100. Over the last 90 days RingCentral reported 16 incidents and Zoom Phone reported 13, with effective uptime of 99.95% and 99.22% respectively.
Data updated Nov 2, 2026 · How we score
| Metric | RingCentral | Zoom Phone |
|---|---|---|
| Reliability score | 63.2 | 51.9 |
| Rank (business phone systems) | #11 | #13 |
| Uptime (90 days) | 99.95% | 99.22% |
| Incidents (90 days) | 16 | 13 |
| Partial / major outages | 1 | 0 |
| Avg time to resolve | — | 1d 1h |
| Outages we detected | 3 | 0 |
| Transparency score | 25/100 | 100/100 |
Where RingCentral and Zoom Phone differ
- RingCentral reported 23% more incidents than Zoom Phone over the last 90 days (16 vs 13).
- RingCentral had 1 partial or major outage, compared with 0 for Zoom Phone.
- Our own probes detected 3 outages at RingCentral and 0 at Zoom Phone, of which 0 and 0 respectively were acknowledged on their status pages.
90-day uptime
RingCentral
Zoom Phone
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent RingCentral incidents
- Degraded performanceOct 23, 2026 · resolved (duration not published)
Phone: A portion of customers in the APAC region may be experiencing dead air on calls
Affected: Phone
- Degraded performanceOct 22, 2026 · resolved (duration not published)
Phone: A portion of customers in the APAC region may be experiencing dead air on calls
Affected: Phone
- Degraded performanceOct 13, 2026 · resolved (duration not published)
Phone: A portion of customers may be unable to add agents to existing call queues
Affected: Phone
- Degraded performanceOct 7, 2026 · resolved (duration not published)
Affected: Phone
- Degraded performanceSep 22, 2026 · resolved (duration not published)
Affected: Phone
- Degraded performanceSep 22, 2026 · resolved (duration not published)
Affected: Messaging
Recent Zoom Phone incidents
- MaintenanceOct 19, 2026 · resolved in 2d 12h
[Scheduled] Zoom Phone Maintenance - AMS3 Data Center: October 19, 2026
- InformationalOct 19, 2026 · resolved in 16m
Service Degradation Affecting ZP SMS Australia Mobile Numbers
Affected: SMS/MMS (Inbound/Outbound)
- MaintenanceOct 18, 2026 · resolved in 2h
[Scheduled] Zoom Phone Update - Japan SIP Zones: October 18, 2026 (No Operational Impact)
- MaintenanceOct 18, 2026 · resolved in 9h
[Scheduled] Zoom Phone Update: October 18, 2026 (No Operational Impact)
- InformationalOct 9, 2026 · resolved in 12m
Service Degradation Affecting Zoom Phone and Zoom Contact Center PCI Integration in North America
Affected: PCI Integration, PCI Integration
- MaintenanceOct 9, 2026 · resolved in 1d 6h
[Scheduled] Zoom Phone India Maintenance (Hyderabad Data Center): October 09, 2026
Other business phone systems to consider
- Grasshopper · #1 · 99.96% uptime
- JustCall · #2 · 99.96% uptime
- CloudTalk · #3 · 99.91% uptime
- GoTo Connect · #4 · 99.87% uptime