CoverageMap

San Carlos

Cell coverage comparison in San Carlos, Arizona

US

Based on crowdsourced speed tests and signal measurements in San Carlos, Arizona, the current snapshot reflects 44 speed tests and shows medians of 21.0 Mbps download, 4.9 Mbps upload, and 66 ms latency.

Performance by Carrier in San Carlos

Explore median download speeds, upload performance, and network latency for each major mobile carrier in San Carlos, 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.

AT&T logo
Download5.1 Mbps
Upload4.0 Mbps
Latency94 ms
Coverage21.0%
T-Mobile logo
Download124.9 Mbps
Upload1.0 Mbps
Latency60 ms
Coverage3.1%
Verizon logo
Download25.6 Mbps
Upload11.7 Mbps
Latency57 ms
Coverage17.6%

Performance by Carrier shows side-by-side results for the primary mobile providers measured in San Carlos. Each row reflects median download, upload, and latency for that carrier.

Providers included in this comparison are Verizon, T-Mobile, AT&T. Per-carrier test counts are shown in the table to indicate data accuracy.

Network Performance in San Carlos

Get a complete view of mobile network performance across San Carlos with overall benchmarks and carrier-by-carrier breakdowns. Explore median performance metrics calculated from millions of real-world, crowdsourced speed tests. Start with the San Carlos-wide snapshot to understand overall network trends, then dive deeper to compare individual carriers side-by-side and see how each performs in speed, responsiveness, and availability.

Median Performance

Download

21.0Mbps

Upload

4.9Mbps

Latency

66ms

Top Performers

Fastest Download: T-Mobile

124.9 Mbps

Fastest Upload: Verizon

11.7 Mbps

Best Latency: Verizon

57 ms

Best Coverage: AT&T

21.0%

Coverage Snapshot

5G1.6%
4G LTE21.0%
Based on 44 speed tests

Network Performance aggregates all measured carriers in San Carlos 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 44 tests. Current medians are 21.0 Mbps download, 4.9 Mbps upload, and 66 ms latency.

Cell Phone Plans for San Carlos

Compare wireless plans from carriers with coverage in this area.

MobileX Custom

$0/mo

Monthly plan

Verizon
  • No Data Included
  • Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

MobileX 150 Mins 150 Texts

$4.48/mo

Monthly plan

Verizon
  • No Data Included
  • No Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

Red Pocket 500MB 12 Months

$5/mo

12 month term

AT&T
T-Mobile
Verizon
  • 0.5 GB Datahigh-speed, then Unknown
  • Hotspot Included
  • 500 Minutes
  • 500 Texts

MobileX Unlimited Talk and Text

$6.48/mo

Monthly plan

Verizon
  • No Data Included
  • No Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

US Mobile Light Plan Annual

$8/mo

12 month term

AT&T
T-Mobile
Verizon
  • 2 GB Datahigh-speed, then data stops
  • No Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts
  • Taxes & Fees Included

MobileX Custom 1GB

$8.38/mo

Monthly plan

Verizon
  • 1 GB Datahigh-speed, then data stops
  • Hotspot Included
  • Unlimited Minutes
  • Unlimited Texts

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Cell Coverage in San Carlos: FAQ

What is the best cell phone carrier in San Carlos?

Based on crowdsourced speed tests in San Carlos, T-Mobile currently leads in median download speeds. Compare carriers in the performance table above for the latest results.

Why might this page show limited data for San Carlos?

We need at least 25 recent speed tests to generate reliable local metrics. If we don't have enough tests yet, the page focuses on maps and nearby locations while we keep collecting data.

How can I check coverage at my specific address in San Carlos?

Use the interactive map to check signal strength at your exact address. Visit the CoverageMap interactive map to explore 4G/5G availability.

How can I contribute coverage data for San Carlos?

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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Explore detailed coverage data for San Carlos on our interactive map.

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San Carlos, Arizona Cell Coverage | CoverageMap