4G LTE & 5G Coverage In Mammoth Lakes

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

Network	4G Coverage	5G Coverage
AT&T	100%	97%
T-Mobile	93%	87%
Verizon	92%	0%

US Cellular And Dish Roaming Coverage

Neither US Cellular nor Dish have a significant presence in Mammoth Lakes. However, some subscribers may still have coverage in Mammoth Lakes thanks to roaming agreements.

Mammoth Lakes Cell Signal Strength

There are 574 map hexes within the census-defined boundaries of Mammoth Lakes. 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	23%	60%	17%	0%
T-Mobile	6%	70%	17%	7%
Verizon	14%	53%	26%	8%

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

Crowdsourced Coverage Data In Mammoth Lakes

Coverage Critic has 1,096 crowdsourced data points from 64 map hexes within the boundaries of Mammoth Lakes. Data is available for AT&T and T-Mobile.

Network	Unique Hexes	Total Observations
AT&T	55	702
T-Mobile	26	393
Verizon	0	0

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 Mammoth Lakes is rated as medium-low confidence. Consider talking with neighbors about their cell phone coverage and looking at carriers' coverage maps before choosing a plan. Documentation is available elsewhere covering limitations of Coverage Critic's approach.