Cell Coverage in South San Francisco, California
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Performance by Carrier in South San Francisco
Compare real-world download speeds, upload performance, and latency for major carriers in South San Francisco — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.
95 tests conducted
92 tests conducted
Over 100 tests conducted
These results compare 3 mobile carriers measured in South San Francisco — AT&T, T-Mobile, Verizon — using median values calculated from crowdsourced speed tests. Each card shows download speed, upload speed, and reliability to give you a complete picture of real-world network performance.
AT&T delivers the fastest median download at 131.5 Mbps, making it the top performer for raw download throughput. Verizon leads in coverage, reaching 100.0% of the area based on FCC data. T-Mobile ranks highest for reliability with a score of 8.9/10, reflecting consistent connection quality across tests.
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Network Performance
Based on crowdsourced speed tests and signal measurements in South San Francisco, California, get a complete view of mobile performance with area-wide benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics from real-world tests, then compare carriers side-by-side for speed, responsiveness, and availability.
Median Performance
Download
Upload
Latency
Reliability
Top Performers
Best Download: AT&T
131.5 Mbps
Best Upload: T-Mobile
15.7 Mbps
Best Latency: AT&T
24 ms
Best Reliability: T-Mobile
8.9 / 10
Best Coverage: Verizon
100.0%
Coverage Snapshot
Network Performance aggregates all measured carriers in South San Francisco 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 300 tests. Current medians are 104.3 Mbps download, 11.4 Mbps upload, and 31 ms latency.
Cell Phone Plans for South San Francisco
Compare wireless plans from carriers with coverage in this area.
Mint Mobile 5GB Annual
12 month term
Mint Mobile 5GB Annual
12 month term
- 5 GB Datahigh-speed, then 128Kbps
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
US Mobile 5GB
Monthly plan
US Mobile 5GB
Monthly plan
- 5 GB Datahigh-speed, then data stops
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
US Mobile Unlimited Starter Dark Star
Monthly plan
US Mobile Unlimited Starter Dark Star
Monthly plan
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Visible Base
Monthly plan
Visible Base
Monthly plan
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
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
Visible+
Monthly plan
Visible+
Monthly plan
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
$30/mo for 5 years with code 5OFF5
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Cell Coverage in South San Francisco: FAQ
What is the best cell phone carrier in South San Francisco?
Why might this page show limited data for South San Francisco?
What is the reliability score?
How can I check coverage at my specific address in South San Francisco?
How can I contribute coverage data for South San Francisco?
Download the CoverageMap app and run a few speed tests with location enabled. Your results help improve coverage accuracy and unlock local rankings faster.
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