4G LTE & 5G Coverage In Fontana

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

Network	4G Coverage	5G Coverage
AT&T	100%	100%
T-Mobile	100%	100%
Verizon	100%	99%
Dish	0%	64%

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

US Cellular And Dish Roaming Coverage

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

The 64% figure for Dish may understate what subscribers in Fontana experience after accounting for roaming agreements.

Fontana Cell Signal Strength

There are 941 map hexes within the census-defined boundaries of Fontana. 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	38%	62%	1%	0%
T-Mobile	54%	45%	1%	0%
Verizon	48%	52%	0%	0%
Dish	1%	38%	25%	36%

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

Crowdsourced Coverage Data In Fontana

Coverage Critic has 41,925 crowdsourced data points from 500 map hexes within the boundaries of Fontana. Data is available for AT&T, T-Mobile, and Verizon.

Network	Unique Hexes	Total Observations
AT&T	338	10,231
T-Mobile	352	12,015
Verizon	404	19,604

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 Fontana is rated as medium-high confidence. Documentation is available elsewhere covering limitations of Coverage Critic's approach.