CoverageMap

Cell Coverage in Armour, South Dakota

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Mint Mobile

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New customers only

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Klarna Mobile

Get a Klarna Mobile phone plan with priority 5G on AT&T.

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Not enough data for Armour

Showing performance data for South Dakota instead. We need at least 25 speed tests in Armour to generate local metrics.

Performance by Carrier in South Dakota

Compare real-world download speeds, upload performance, and latency for major carriers in South Dakota — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.

AT&T logo
Down
65.7Mbps
Up
9.1Mbps
Reliab.
4.0/ 10
Cov.
100.0%

Over 6,400 tests conducted

T-Mobile logo
Down
188.1Mbps
Up
12.0Mbps
Reliab.
5.9/ 10
Cov.
100.0%

Over 10,000 tests conducted

Verizon logo
Down
70.1Mbps
Up
9.8Mbps
Reliab.
3.8/ 10
Cov.
100.0%

Over 8,800 tests conducted

These results compare 3 mobile carriers measured in South DakotaAT&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.

T-Mobile delivers the fastest median download at 188.1 Mbps, making it the top performer for raw download throughput. AT&T leads in coverage, reaching 100.0% of the area based on FCC data. T-Mobile ranks highest for reliability with a score of 5.9/10, reflecting consistent connection quality across tests.

Promoted Offers

Mint Mobile

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New customers only

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Klarna Mobile

Get a Klarna Mobile phone plan with priority 5G on AT&T.

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Network Performance

Based on crowdsourced speed tests and signal measurements in Armour, South Dakota using data from South Dakota, 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

103.1Mbps

Upload

10.6Mbps

Latency

70ms

Reliability

4.3/ 10

Top Performers

Best Download: T-Mobile

188.1 Mbps

Best Upload: T-Mobile

12.0 Mbps

Best Latency: T-Mobile

60 ms

Best Reliability: T-Mobile

5.9 / 10

Best Coverage: AT&T

100.0%

Coverage Snapshot

5G100.0%
4G LTE100.0%
Based on 12 speed tests

Network Performance aggregates all measured carriers in South Dakota to provide a baseline view of typical speeds and latency in the area. Use these medians as a quick indicator of overall network quality.

Local testing in Armour is limited, so these medians are based on data from South Dakota. Current medians are 103.1 Mbps download, 10.6 Mbps upload, and 70 ms latency.

Promoted Offers

Mint Mobile

$500 off Galaxy S26 series, plus 1 year of unlimited for $15/mo

New customers only

See Deal
Klarna Mobile

Get a Klarna Mobile phone plan with priority 5G on AT&T.

Bring your number to get your first month free

See Deal

Cell Phone Plans for Armour

Compare wireless plans from carriers with coverage in this area.

Recommended PlanSponsored

Mint Mobile 5GB Annual

12 month term

T-Mobile
$15/mo
5 GB Data
Hotspot Included
Unlimited min
Unlimited texts
Recommended PlanSponsored

US Mobile 5GB

Monthly plan

AT&T
T-Mobile
Verizon
$15/mo
5 GB Data
Hotspot Included
Unlimited min
Unlimited texts
Taxes & fees included
Recommended PlanSponsored

US Mobile Unlimited Starter Dark Star

Monthly plan

AT&T
$25/mo
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
Recommended PlanSponsored

Visible Base

Monthly plan

Verizon
$25/mo
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
Recommended PlanSponsored

Mint Mobile Unlimited Annual

12 month term

T-Mobile
$30/mo
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
Limited-time offer

$15/mo first year

Recommended PlanSponsored

Visible+

Monthly plan

Verizon
$35/mo
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
Limited-time offer

$30/mo for 5 years with code 5OFF5

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Cell Coverage in Armour: FAQ

What is the best cell phone carrier in Armour?

Based on crowdsourced speed tests in South Dakota, 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 Armour?

We need at least 25 recent speed tests to generate reliable local metrics. Until we reach that threshold in Armour, we show performance data for South Dakota when it is available.

What is the reliability score?

The reliability score summarizes how dependable mobile performance is in South Dakota. It uses a 0.0 to 10.0 scale (higher is better) and is calculated from real-world speed test percentiles with weighted components: download (50%), latency (30%), and upload (20%). It evaluates the lower-end experience using the bottom 10%, 5%, and 1% percentiles when enough samples are available. If local speed testing is limited, a coverage-based fallback is used from signal quality distribution (great/good/poor).

How can I check coverage at my specific address in Armour?

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 Armour?

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 app