• 5G coverage in California is provided by AT&T, T-Mobile, Verizon Wireless. • 3G/4G LTE coverage in California is provided by AT&T, T-Mobile, Verizon Wireless. There are a total of 39 carriers with plans starting at $0/mo with Unlimited data.
Coverage information is collected from carriers and other third party sources. This is approximate coverage only and does not include indoor coverage. Actual speed and performance depends on your location and device. Local conditions and things like natural and artificial physical features of an area all affect your reception.
Cell Phone Plans in California
Many California residents are paying too much for cell service, and with an average annual household spend of $2,994, accounting for 3.33% of income. Switching to a low-cost carrier like Mint Mobile could save you more than $2,334 per year.
Phone bills in California by the numbers
Average annual spend: $2,994 per household
Percent of income spent on cell service: 3.33% (vs. national avg. 3.63%)
Potential savings per household: $2,334 per year
Total family spend statewide: $40.2B
To cut your monthly bill, consider switching to Visible or Tello. These providers offer great coverage and low-cost, unlimited plans powered by national networks.
Coverage varies across California, so it's essential to determine which network has the widest coverage in your area. T-Mobile has the strongest 5G network overall, but Verizon tends to offer better LTE performance in rural and coastal areas.
T-Mobile offers the most reliable 5G coverage across California.
Verizon has the strongest 4G LTE coverage in rural and coastal regions, but it is still spotty near National Parks and National Forests like Death Valley and Yolla Bolly-Middle Wilderness.
Major cities like Sacramento, Los Angeles, and Fresno enjoy fast, reliable service from all three networks.
Use the interactive coverage map above to zoom into your area. Compare T-Mobile, Verizon, and AT&T networks to find the plan that offers the best mix of price, data, and coverage where you live.
Sharing data with carriers when searching for plans
WhistleOut’s internet coverage check requires that we verify serviceability at your address with carriers. When you click to purchase, we only pass verified addresses to a carrier and your address is loaded into the carrier’s shopping cart so that you can easily complete the purchase.
As part of California Consumer Privacy Act (CCPA) you are able to select that we do not sell this data to the carrier - this will also prevent us from validating your coverage with a carrier and setting up the address with the carrier if you choose to purchase.
Do not sell my data (address)
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