Business Phone Systems · reliability comparison
Vonage Business Communications vs Zoom Phone: which is more reliable? (2026)
Vonage Business Communications is more reliable than Zoom Phone, scoring 73.0 vs 51.7 out of 100. Over the last 90 days Vonage Business Communications reported 3 incidents and Zoom Phone reported 13, with effective uptime of 99.72% and 99.21% respectively. Vonage Business Communications resolves incidents faster on average (13h 24m).
Data updated Nov 1, 2026 · How we score
| Metric | Vonage Business Communications | Zoom Phone |
|---|---|---|
| Reliability score | 73.0 | 51.7 |
| Rank (business phone systems) | #9 | #12 |
| Uptime (90 days) | 99.72% | 99.21% |
| Incidents (90 days) | 3 | 13 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 13h 24m | 1d 1h |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Vonage Business Communications and Zoom Phone differ
- Zoom Phone reported 4.3× as many incidents as Vonage Business Communications over the last 90 days (13 vs 3).
- Vonage Business Communications fixes problems faster: 13h 24m on average, against 1d 1h for Zoom Phone.
- Vonage Business Communications's longest outage on record lasted 3d (Jan 21, 2026); Zoom Phone's lasted 3d (Sep 25, 2026).
90-day uptime
Vonage Business Communications
Zoom Phone
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Vonage Business Communications incidents
- Degraded performanceOct 23, 2026 · resolved in 21h 12m
Inbound Call Completion Issues — Select Canadian Regions
Affected: Inbound Call Completion
- Degraded performanceOct 5, 2026 · resolved in 17h 48m
Vonage Mobile App Intermittently Not Sending Notifications
Affected: Mobile App (Android™), Mobile App (iOS)
- Degraded performanceSep 3, 2026 · resolved in 1h 13m
Account Features Not Updating for Some Accounts
Affected: Call Forwarding, Virtual Receptionist, Call Queues, Receptionist Console
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