Business Phone Systems · reliability comparison
JustCall vs Nextiva: which is more reliable? (2026)
JustCall is more reliable than Nextiva, scoring 93.4 vs 66.1 out of 100. Over the last 90 days JustCall reported 4 incidents and Nextiva reported 8, with effective uptime of 99.96% and 99.37% respectively. JustCall resolves incidents faster on average (1h 18m).
Data updated Nov 1, 2026 · How we score
| Metric | JustCall | Nextiva |
|---|---|---|
| Reliability score | 93.4 | 66.1 |
| Rank (business phone systems) | #2 | #10 |
| Uptime (90 days) | 99.96% | 99.37% |
| Incidents (90 days) | 4 | 8 |
| Partial / major outages | 0 | 6 |
| Avg time to resolve | 1h 18m | 2h 35m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where JustCall and Nextiva differ
- Nextiva reported 2× as many incidents as JustCall over the last 90 days (8 vs 4).
- Nextiva had 6 partial or major outages, compared with 0 for JustCall.
- JustCall fixes problems faster: 1h 18m on average, against 2h 35m for Nextiva (2.0× quicker).
- JustCall's longest outage on record lasted 12m (Mar 9, 2026); Nextiva's lasted 8h 45m (Oct 1, 2026).
90-day uptime
JustCall
Nextiva
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent JustCall incidents
- Degraded performanceOct 27, 2026 · resolved in 40m
Failures in incoming and outgoing calls
Affected: JustCall Dashboard, JustCall Live Dashboard
- Degraded performanceOct 22, 2026 · resolved in 39m
Affected: Outbound Calling, SMS Service, JustCall Dashboard, Contact sync with CRMs, help desks and other integrations, Inbound Calling, MMS Service +1 more
- Degraded performanceSep 1, 2026 · resolved in 29m
Partial Degradation of Calling, SalesDialer, and Inbound Call Services
Affected: Inbound Calling, Sales Dialer
- Degraded performanceAug 18, 2026 · resolved in 3h 23m
Slowness reported across platform
Affected: Outbound Calling, SMS Service, JustCall Dashboard, Inbound Calling, MMS Service, Sales Dialer
Recent Nextiva incidents
- Major outageOct 28, 2026 · resolved in 1h 4m
NextivaONE and NextOS Platform Login Issuesofficial update ↗
Affected: Nextiva Call Center, NextivaONE, NextOS Platform
- Degraded performanceOct 27, 2026 · resolved in 45m
Intermittent Audio Quality and Calling Issues.
Affected: Nextiva Call Center, NextOS Platform
- Degraded performanceOct 20, 2026 · resolved in 2h 18m
Nextiva Contact Center Client Issues
Affected: Nextiva Contact Center
- Partial outageOct 1, 2026 · resolved in 8h 45m
Sales Chat Errorsofficial update ↗
Affected: Nextiva.com
- Partial outageSep 18, 2026 · resolved in 6m
Nextiva Call Center login failures
Affected: Nextiva Call Center
- Partial outageSep 11, 2026 · resolved in 27m
Nextiva Contact Center Inbound Calling Issues
Affected: Nextiva Contact Center
Other business phone systems to consider
- Grasshopper · #1 · 99.96% uptime
- CloudTalk · #3 · 99.91% uptime
- GoTo Connect · #4 · 99.87% uptime
- Quo (formerly OpenPhone) · #5 · 99.83% uptime