In San Diego County, you’ll select from 3 mobile wireless carriers listed below. 96.3% of San Diego County’s land area is covered by some kind of wireless service, as are 99.99% of San Diego County’s 3,298,634 residents. 5G reception covers up to 99.63% of people while they are sitting at home. Note that we may have a financial relationship with some of the San Diego County providers below. This does not influence what data we show, and helps us provide high-quality, detailed information for free.
San Diego County, CA Top Cell Providers
Starter Phones Designed for Child Safety
Coverage:
T-Mobile Network
Data Speeds:
Same as T-Mobile below
Plans start at $29/mo.
View plans
Built-in Parental Controls | Approved Contacts Only | Parent-Controlled Internet Access
Plans include 5G where available.
Coverage:
T-Mobile Network
Data Speeds:
Same as T-Mobile below
Plans start at $15/mo.
View plans
Mint Mobile provides very affordable plans using the same network as T-Mobile throughout the United States. Learn more about Mint vs. other carriers.
Verizon Wireless 5G available in San Diego County
Coverage:
99.86% of San Diego County
96.15% of the USA
Data Speeds:
5G: 93.06% 4G: 99.68% 3G or 2G: 99.80%
More about Verizon Wireless in San Diego County
Verizon Wireless Data Speeds and Coverage in San Diego County
Verizon Wireless covers 99.86% of homes in the county with mobile data. The fastest cellular data speed available is 5G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in San Diego County) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
5G |
93.06% |
54.73% |
4G |
99.68% |
75.01% |
2G or 3G |
99.80% |
80.84% |
5G is the fastest wireless internet and data speed for 93.06% of homes. 4G is the fastest cell coverage for 0.00% of homes. 0.00% of homes can only receive 2G or 3G data. We rank Verizon Wireless as #3 out of 3 for a combination of coverage and speed among San Diego County mobile providers.
Verizon Wireless Voice Quality in San Diego County
5G voice quality can be very clear, and is available to 93.06% of homes. 4G voice is considered HD, and is available at 99.78% of San Diego County homes. 99.61% of homes can make calls using older 2G or 3G voice technology.
T-Mobile 5G available in San Diego County
Coverage:
99.95% of San Diego County
97.12% of the USA
Data Speeds:
5G: 96.22% 4G: 99.30% 3G or 2G: 99.75%
More about T-Mobile in San Diego County
T-Mobile Data Speeds and Coverage in San Diego County
T-Mobile covers 99.95% of homes in the county with mobile data. The fastest cellular data speed available is 5G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in San Diego County) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
5G |
96.22% |
72.37% |
4G |
99.30% |
70.35% |
2G or 3G |
99.75% |
72.74% |
5G is the fastest wireless internet and data speed for 96.22% of homes. 4G is the fastest cell coverage for 0.00% of homes. 0.00% of homes can only receive 2G or 3G data. We rank T-Mobile as #2 out of 3 for a combination of coverage and speed among San Diego County mobile providers.
T-Mobile Voice Quality in San Diego County
5G voice quality can be very clear, and is available to 96.22% of homes. 4G voice is considered HD, and is available at 99.87% of San Diego County homes. 99.75% of homes can make calls using older 2G or 3G voice technology.
AT&T Wireless 5G available in San Diego County
Coverage:
99.92% of San Diego County
96.67% of the USA
Data Speeds:
5G: 97.21% 4G: 99.77% 3G or 2G: 99.90%
1-833-652-2264
More about AT&T Wireless in San Diego County
AT&T Wireless Data Speeds and Coverage in San Diego County
AT&T Wireless covers 99.92% of homes in the county with mobile data. The fastest cellular data speed available is 5G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in San Diego County) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
5G |
97.21% |
52.34% |
4G |
99.77% |
83.17% |
2G or 3G |
99.90% |
93.79% |
5G is the fastest wireless internet and data speed for 97.21% of homes. 4G is the fastest cell coverage for 0.00% of homes. 0.00% of homes can only receive 2G or 3G data. We rank AT&T Wireless as #1 out of 3 for a combination of coverage and speed among San Diego County mobile providers.
AT&T Wireless Voice Quality in San Diego County
5G voice quality can be very clear, and is available to 97.21% of homes. 4G voice is considered HD, and is available at 99.87% of San Diego County homes. 99.90% of homes can make calls using older 2G or 3G voice technology.
Coverage percentages on this page are based on the percent of San Diego County homes that would be covered by cellular service of any kind, unless specified as San Diego County land area.
Fastest Cell Service Down to the San Diego County Neighborhood
The map below shows where Verizon, AT&T, or T-Mobile are faster in San Diego County, CA. Areas with no clear winner are shown as ties.
Overall, San Diego County ranks #1925 out of 3619 counties for the fastest mobile internet network speeds in California.
The central parts of the county feature better overall coverage for faster data. The opposite is true in the northeastern areas of San Diego County where mobile data speeds are generally slower.
Best Coverage & Data Speeds in San Diego County, CA: AT&T Wireless
Among the largest cell phone companies in the United States, AT&T Wireless has the best speed and coverage in San Diego County. AT&T Wireless has 5G that covers 97.21% of the county. Cell service of any type reaches 99.95% of San Diego County homes.
Cheap Options for Mobile Service in San Diego County, CA
If the price of a San Diego County mobile plan is a major concern for you, cheaper mobile plans are available as well. There are several options available in San Diego County including pre-paid, no-contract plans that start as low as $15 per line. Many of these providers such as Mint, Boost, and Cricket partner with the three major carriers to provide excellent coverage nationwide. With these discount options, the price of your San Diego County wireless plan will quickly rise if you add additional lines or features such as a hotspot or unlimited data.
Plans include 5G where available.
Coverage:
T-Mobile Network
Data Speeds:
Same as T-Mobile above
Plans start at $15/mo.
View plans
Mint Mobile provides very affordable plans using the same network as T-Mobile throughout the United States.
These providers all offer excellent coverage at a lower price compared to more well-known brands. Mint is generally regarded as the most affordable provider for unlimited data, with a high "throttle cap" of 35GB. Depending on where you live, you may prefer the AT&T network coverage offered by Cricket. Boost is a good option for international travelers.
San Diego County, CA Mobile Network Coverage Maps | Voice, 4G & 5G
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Your mobile coverage in San Diego County may vary based on your provider and location. The map above shows the fastest mobile data speeds in and around the county. To see coverage for an individual provider, click the provider's availability maps above.
There are several types of mobile coverage to consider when evaluating a carrier’s geographic reliability. 5G is the fastest mobile data connection in San Diego County covering 99.63% of homes in the area while 4G covers 99.92% of the county. Overall, 99.99% of homes (3,298,634 people) and 96.3% of the land (4,056.1 square miles) are covered by some form of cell technology.
5G Coverage Map and Availability in San Diego County
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5G is currently the most advanced network available with speeds several times faster than 4G. 5G networks in San Diego County cover 99.63% of homes with 5G voice and data. In total 79.39% or 3,342.5 square miles of San Diego County are covered by 5G. The best 5G coverage in San Diego County comes from AT&T Wireless with 97.21% coverage.
4G Coverage Map and Availability in San Diego County
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4G/LTE networks have become one of the nation’s most common mobile coverage types for data, and in some locations, voice calls. In San Diego County, 99.86% of the area is covered by 4G data, and 99.92% is covered by 4G HD voice service. T-Mobile and AT&T Wireless has the best 4G network in San Diego County with 99.87% coverage.
Selecting the Best Cell Provider in San Diego County for You
If you’re still struggling to choose a cell phone provider in the county, some of these facts may help you decide:
- Coverage to San Diego County houses is best with service from T-Mobile, with 99.95% of homes covered.
- The best coverage across all San Diego County land is provided by AT&T Wireless at 95.63% of land area covered.
- The current best 5G coverage comes from AT&T Wireless reporting 97.21% in San Diego County.
- The top estimated average speed in San Diego County, estimated at 69.02, Mbps is available through AT&T Wireless.
Mobile Service Counties Near San Diego County
If you live near San Diego County but aren’t technically in the county, or you like to explore the region a lot, your coverage availability and speeds may vary.
Enter your zip code here to find more precise mobile numbers on your exact location. Here are our mobile and cell phone guides for several popular locations in and around San Diego County:
Counties close to San Diego County
- Imperial County, CA: worse coverage
- Graham County, AZ: worse coverage
- Greenlee County, AZ: worse coverage
- Grant County, NM: worse coverage
- Otero County, NM: worse coverage
- Lea County, NM: better coverage
- Gaines County, TX: worse coverage
- Dawson County, TX: worse coverage
- Borden County, TX: worse coverage
- Scurry County, TX: worse coverage
Counties with similar populations to San Diego County
- Orange County, CA: better coverage
- Maricopa County, AZ: better coverage
- Los Angeles County, CA: better coverage
- Erie County, NY: worse coverage
- Harris County, TX: better coverage
- Lake County, IL: better coverage
- Davidson County, TN: better coverage
- DeKalb County, GA: better coverage
- Lee County, FL: better coverage
- Kings County, NY: better coverage