Get unlimited data for $15/month for your first 12 months
Get any plan for $15/month for a limited time. New customers only
Cell Coverage in Marietta, South Carolina
See Deal
Unlimited priority data on Verizon for $30/mo
Save $5 off on the Visible+ plan for a limited time with code SUMMER
Not enough data for Marietta
Showing performance data for Greenville instead. We need at least 25 speed tests in Marietta to generate local metrics.
Performance by Carrier in Greenville
Compare real-world download speeds, upload performance, and latency for major carriers in Greenville — based on millions of crowdsourced speed tests to help you find the fastest, most reliable network.
DownDownload
347.9Mbps
UpUpload
10.1Mbps
Reliab.Reliability
8.8/ 10
Cov.Coverage
92.9%
Over 29,000 tests conducted
DownDownload
432.9Mbps
UpUpload
13.8Mbps
Reliab.Reliability
9.5/ 10
Cov.Coverage
65.2%
Over 5,800 tests conducted
DownDownload
285.5Mbps
UpUpload
12.9Mbps
Reliab.Reliability
9.1/ 10
Cov.Coverage
98.2%
Over 17,000 tests conducted
These results compare 3 mobile carriers measured in Greenville — AT&T, Verizon, T-Mobile — 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 432.9 Mbps, making it the top performer for raw download throughput. Verizon leads in coverage, reaching 98.2% of the area based on FCC data. T-Mobile ranks highest for reliability with a score of 9.5/10, reflecting consistent connection quality across tests.
Network Performance
Based on crowdsourced speed tests and signal measurements in Marietta, South Carolina using data from Greenville, 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
339.5Mbps
Upload
11.3Mbps
Latency
50ms
Reliability
8.9/ 10
Top Performers
Best Download: T-Mobile
432.9 Mbps
Best Upload: T-Mobile
13.8 Mbps
Best Latency: T-Mobile
40 ms
Best Reliability: T-Mobile
9.5 / 10
Best Coverage: Verizon
98.2%
Coverage Snapshot
5G94.1%
4G LTE98.2%
Based on 17 speed tests
Network Performance aggregates all measured carriers in Greenville 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 Marietta is limited, so these medians are based on data from Greenville. Current medians are 339.5 Mbps download, 11.3 Mbps upload, and 50 ms latency.
Cell Phone Plans for Marietta
Compare wireless plans from carriers with coverage in this area.
Recommended PlanSponsored
Mint Mobile 6GB Annual
12 month term
T-Mobile
$15/mo
Mint Mobile 6GB Annual
$15/mo
12 month term
T-Mobile
6 GB Data
Hotspot Included
Unlimited min
Unlimited texts
- 6 GB Datahigh-speed, then 128Kbps
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
Recommended PlanSponsored
US Mobile 5GB
Monthly plan
AT&T
T-Mobile
Verizon
$15/mo
US Mobile 5GB
$15/mo
Monthly plan
AT&T
T-Mobile
Verizon
5 GB Data
Hotspot Included
Unlimited min
Unlimited texts
Taxes & fees included
- 5 GB Datahigh-speed, then data stops
- Hotspot Included
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Recommended PlanSponsored
US Mobile Unlimited Starter Dark Star
Monthly plan
AT&T
$25/mo
US Mobile Unlimited Starter Dark Star
$25/mo
Monthly plan
AT&T
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Recommended PlanSponsored
Visible Base
Monthly plan
Verizon
$25/mo
Visible Base
$25/mo
Monthly plan
Verizon
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Recommended PlanSponsored
Mint Mobile Unlimited Annual
12 month term
T-Mobile
$30/mo
Mint Mobile Unlimited Annual
$30/mo
12 month term
T-Mobile
Unlimited Data
20 GB Hotspot
Unlimited min
Unlimited texts
- Unlimited Datahigh-speed
- 20 GB Hotspot
- Unlimited Minutes
- Unlimited Texts
Limited-time offer
$15/mo first year
Recommended PlanSponsored
Visible+
Monthly plan
Verizon
$35/mo
Visible+
$35/mo
Monthly plan
Verizon
Unlimited Data
Unlimited Hotspot
Unlimited min
Unlimited texts
Taxes & fees included
- Unlimited Datahigh-speed
- Unlimited Hotspot
- Unlimited Minutes
- Unlimited Texts
- Taxes & Fees Included
Limited-time offer
$30/mo for 5 years with code 5OFF5
Page 1 of 46
Cell Coverage in Marietta: FAQ
What is the best cell phone carrier in Marietta?
Based on crowdsourced speed tests in Greenville, 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 Marietta?
We need at least 25 recent speed tests to generate reliable local metrics. Until we reach that threshold in Marietta, we show performance data for Greenville when it is available.
What is the reliability score?
The reliability score summarizes how dependable mobile performance is in Greenville. 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 Marietta?
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 Marietta?
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