Business Phone Systems · reliability comparison
Google Voice vs Quo (formerly OpenPhone): which is more reliable? (2026)
Google Voice is more reliable than Quo (formerly OpenPhone), scoring 99.4 vs 83.4 out of 100. Over the last 90 days Google Voice reported 0 incidents and Quo (formerly OpenPhone) reported 9, with effective uptime of 99.98% and 99.83% respectively.
Data updated Nov 2, 2026 · How we score
VS
| Metric | Google Voice | Quo (formerly OpenPhone) |
|---|---|---|
| Reliability score | 99.4 | 83.4 |
| Rank (business phone systems) | — | #5 |
| Uptime (90 days) | 99.98% | 99.83% |
| Incidents (90 days) | 0 | 9 |
| Partial / major outages | 0 | 4 |
| Avg time to resolve | — | 1h 12m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Google Voice and Quo (formerly OpenPhone) differ
- Google Voice reported no incidents in the last 90 days, while Quo (formerly OpenPhone) reported 9.
- Quo (formerly OpenPhone) had 4 partial or major outages, compared with 0 for Google Voice.
- Google Voice's longest outage on record lasted 56m (May 31, 2026); Quo (formerly OpenPhone)'s lasted 3d (Jul 24, 2026).
90-day uptime
Google Voice
Quo (formerly OpenPhone)
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Google Voice incidents
No incidents reported by Google Voice in the last 90 days.
Recent Quo (formerly OpenPhone) incidents
- Degraded performanceOct 17, 2026 · resolved in 37m
Elevated calling errors within the APAC region
Affected: Calling
- InformationalOct 15, 2026 · resolved in 10d 20h
- Degraded performanceOct 14, 2026 · resolved in 1h 11m
Affected: Text Messaging
- Major outageOct 1, 2026 · resolved in 53m
Calling Outageofficial update ↗
Affected: Calling
- Degraded performanceSep 27, 2026 · resolved in 2h 5m
Affected: Android App, Mac App, IOS App, Website
- InformationalSep 17, 2026 · resolved in 6d 18h
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