Business Phone Systems · reliability comparison
CloudTalk vs Zoom Phone: which is more reliable? (2026)
CloudTalk is more reliable than Zoom Phone, scoring 89.6 vs 51.8 out of 100. Over the last 90 days CloudTalk reported 2 incidents and Zoom Phone reported 13, with effective uptime of 99.91% and 99.21% respectively. CloudTalk resolves incidents faster on average (3h 33m).
Data updated Nov 1, 2026 · How we score
| Metric | CloudTalk | Zoom Phone |
|---|---|---|
| Reliability score | 89.6 | 51.8 |
| Rank (business phone systems) | #3 | #13 |
| Uptime (90 days) | 99.91% | 99.21% |
| Incidents (90 days) | 2 | 13 |
| Partial / major outages | 1 | 0 |
| Avg time to resolve | 3h 33m | 1d 1h |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where CloudTalk and Zoom Phone differ
- Zoom Phone reported 6.5× as many incidents as CloudTalk over the last 90 days (13 vs 2).
- CloudTalk had 1 partial or major outage, compared with 0 for Zoom Phone.
- CloudTalk fixes problems faster: 3h 33m on average, against 1d 1h for Zoom Phone (7.1× quicker).
- CloudTalk's longest outage on record lasted 1d 20h (Nov 10, 2025); Zoom Phone's lasted 3d (Sep 25, 2026).
90-day uptime
CloudTalk
Zoom Phone
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent CloudTalk incidents
- Partial outageOct 13, 2026 · resolved in 3h 33m
Something is not working correctlyofficial update ↗
Affected: VoiceAgents
- MaintenanceAug 28, 2026 · ongoing
Scheduled database upgrade of contacts
Affected: CloudTalk Dialer, CloudTalk Dashboard, Integrations, Mobile Application, Desktop Application, Analytics +1 more
- InformationalAug 17, 2026 · resolved in 1h 21m
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
- GoTo Connect · #4 · 99.87% uptime
- Quo (formerly OpenPhone) · #5 · 99.83% uptime