Napa
Cell coverage comparison in Napa, California
Based on crowdsourced speed tests and signal measurements in Napa, California, the current snapshot reflects over 1,600 speed tests and shows medians of 116.3 Mbps download, 10.5 Mbps upload, and 40 ms latency.
Performance by Carrier in Napa
Explore median download speeds, upload performance, and network latency for each major mobile carrier in Napa, calculated from millions of real-world, crowdsourced speed tests. These results reflect typical everyday performance to help you compare carriers and choose the network that delivers the fastest speeds, most responsive connections, and broadest coverage where you live, work, and travel.
Over 300 tests conducted
Over 200 tests conducted
Over 1,000 tests conducted
Performance by Carrier shows side-by-side results for the primary mobile providers measured in Napa. Each row reflects download, upload, latency, and reliability for that carrier.
Providers included in this comparison are AT&T, T-Mobile, Verizon. Per-carrier test counts are shown in the table to indicate data accuracy.
Promoted Offers
Get a Klarna Mobile phone plan with priority 5G on AT&T.
Bring your number to get your first month free
Network Performance
Get a complete view of mobile performance across Napa with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the Napa-wide snapshot to understand overall trends, then dive deeper to compare individual carriers side-by-side and see how each performs in speed, responsiveness, and availability.
Median Performance
Download
Upload
Latency
Reliability
Top Performers
Best Download: AT&T
137.3 Mbps
Best Upload: AT&T
17.4 Mbps
Best Latency: AT&T
40 ms
Best Reliability: AT&T
10.0 / 10
Best Coverage: Verizon
94.0%
Coverage Snapshot
Network Performance aggregates all measured carriers in Napa to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.
These medians are calculated from over 1,600 tests. Current medians are 116.3 Mbps download, 10.5 Mbps upload, and 40 ms latency.
Cell Phone Plans Available in Napa
Compare wireless plans from carriers with coverage in this area.
Mint Mobile Unlimited Annual
12 month term
Mint Mobile Unlimited Annual
12 month term
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
$15/mo first year today
Red Pocket Premium
Monthly plan
Red Pocket Premium
Monthly plan
- 50 GB Datahigh-speed, then 64Kbps
- 10 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
Mint Mobile 15GB 3 Months
3 month term
Mint Mobile 15GB 3 Months
3 month term
- 15 GB Datahigh-speed, then 128Kbps
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
Red Pocket 500MB 12 Months
12 month term
Red Pocket 500MB 12 Months
12 month term
- 0.5 GB Datahigh-speed, then Unknown
- Hotspot Included
- 500 Minutes
- 500 Texts
Tello 100 Mins
Monthly plan
Tello 100 Mins
Monthly plan
- No Data Included
- No Hotspot Included
- 100 Minutes
- Unlimited Texts
Tello 1GB 100 Mins
Monthly plan
Tello 1GB 100 Mins
Monthly plan
- 1 GB Datahigh-speed, then data stops
- Hotspot Included
- 100 Minutes
- Unlimited Texts
Page 1 of 40
Citys in Napa
Select a city to view coverage data for that location.
Cell Coverage in Napa: FAQ
What is the best cell phone carrier in Napa?
Why might this page show limited data for Napa?
What is the reliability score?
How can I check coverage at my specific address in Napa?
How can I contribute coverage data for Napa?
Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.
Get the appView Coverage Map for Napa
Explore detailed coverage data on our interactive map to find the best carrier for your specific location.
Open Interactive Map