4G LTE & 5G Coverage In Fairfield

The table below shows the proportion of Fairfield with coverage from different cellular technologies.

Network	4G Coverage	5G Coverage
AT&T	100%	99%
T-Mobile	100%	99%
Verizon	100%	100%
Dish	0%	61%

Don't be alarmed by Dish's lack of 4G coverage in Fairfield. Dish has a newly-built network that's 5G-only.

US Cellular And Dish Roaming Coverage

US Cellular does not have native coverage in Fairfield. However, some US Cellular subscribers may still have coverage in Fairfield thanks to roaming agreements.

The 61% figure for Dish may understate what subscribers in Fairfield experience after accounting for roaming agreements.

Fairfield Cell Signal Strength

There are 982 map hexes within the census-defined boundaries of Fairfield. The table below shows the proportion of hexes at various levels of signal strength. Where both 4G and 5G coverage is available, data is drawn from whichever technology offers a stronger signal.

Network	Strong	Decent	Weak	None
AT&T	4%	56%	40%	0%
T-Mobile	33%	55%	11%	0%
Verizon	24%	74%	2%	0%
Dish	1%	30%	29%	39%

For most purposes, decent signals are perfectly sufficient. Weak or non-existent signals cause far greater degradation in user experience.

Crowdsourced Coverage Data In Fairfield

Coverage Critic has 22,443 crowdsourced data points from 316 map hexes within the boundaries of Fairfield. Data is available for AT&T, T-Mobile, and Verizon.

Network	Unique Hexes	Total Observations
AT&T	258	11,555
T-Mobile	211	4,896
Verizon	171	4,192

Click here to toggle to the map's crowdsourced data layer.

California State-Wide Coverage Scores

Network	Coverage Score
Verizon	8.8 / 10
AT&T	8.6 / 10
T-Mobile	8.2 / 10

Data Sourcing

Coverage maps draw on data from the FCC's Broadband Data Collection and Coverage Critic's crowdsourcing.

The coverage information for Fairfield is rated as medium-high confidence. Documentation is available elsewhere covering limitations of Coverage Critic's approach.