Cell Phone Coverage In Rancho Cucamonga
All three major networks are expected to offer good cell coverage in Rancho Cucamonga. Check coverage at your location with the map below.
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4G LTE & 5G Coverage In Rancho Cucamonga
The table below shows the proportion of Rancho Cucamonga with coverage from different cellular technologies.| Network | 4G Coverage | 5G Coverage |
|---|---|---|
| AT&T | 100% | 99% |
| T-Mobile | 98% | 100% |
| Verizon | 100% | 100% |
| Dish | 0% | 80% |
Don't be alarmed by Dish's lack of 4G coverage in Rancho Cucamonga. Dish has a newly-built network that's 5G-only.
US Cellular And Dish Roaming Coverage
US Cellular does not have native coverage in Rancho Cucamonga. However, some US Cellular subscribers may still have coverage in Rancho Cucamonga thanks to roaming agreements.
The 80% figure for Dish may understate what subscribers in Rancho Cucamonga experience after accounting for roaming agreements.
Rancho Cucamonga Cell Signal Strength
There are 1,022 map hexes within the census-defined boundaries of Rancho Cucamonga. 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 | 33% | 61% | 6% | 0% |
| T-Mobile | 48% | 45% | 7% | 0% |
| Verizon | 43% | 56% | 1% | 0% |
| Dish | 1% | 50% | 28% | 20% |
For most purposes, decent signals are perfectly sufficient. Weak or non-existent signals cause far greater degradation in user experience.
Crowdsourced Coverage Data In Rancho Cucamonga
Coverage Critic has 21,823 crowdsourced data points from 507 map hexes within the boundaries of Rancho Cucamonga. Data is available for AT&T, T-Mobile, and Verizon.
| Network | Unique Hexes | Total Observations |
|---|---|---|
| AT&T | 239 | 3,280 |
| T-Mobile | 439 | 12,807 |
| Verizon | 284 | 5,644 |
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 Rancho Cucamonga is rated as medium-high confidence. Documentation is available elsewhere covering limitations of Coverage Critic's approach.
Last updated: February 26, 2025