In 94021, you’ll select from 3 mobile wireless carriers listed below. 99.9% of 94021’s land area is covered by some kind of wireless service, as are 99.18% of 94021’s 161 residents. 5G reception covers up to 0.00% of people while they are sitting at home. Note that we may have a financial relationship with some of the 94021 providers below. This does not influence what data we show, and helps us provide high-quality, detailed information for free.
94021, 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.
More about T-Mobile in 94021
T-Mobile Data Speeds and Coverage in 94021
T-Mobile covers 1.67% of homes in the zip with mobile data. The fastest cellular data speed available is 4G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in 94021) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
4G |
1.67% |
1.67% |
2G or 3G |
0.01% |
0.01% |
4G is the fastest cell coverage for 1.67% of homes. 0.00% of homes can only receive 2G or 3G data. We rank T-Mobile as #3 out of 3 for a combination of coverage and speed among 94021 mobile providers.
T-Mobile Voice Quality in 94021
4G voice is considered HD, and is available at 1.67% of 94021 homes. 0.01% of homes can make calls using older 2G or 3G voice technology.
Coverage:
99.18% of 94021
96.67% of the USA
Data Speeds:
4G: 10.05% 3G or 2G: 99.18%
1-833-652-2264
More about AT&T Wireless in 94021
AT&T Wireless Data Speeds and Coverage in 94021
AT&T Wireless covers 99.18% of homes in the zip with mobile data. The fastest cellular data speed available is 4G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in 94021) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
4G |
10.05% |
22.11% |
2G or 3G |
99.18% |
99.90% |
4G is the fastest cell coverage for 10.05% of homes. 89.13% 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 94021 mobile providers.
AT&T Wireless Voice Quality in 94021
4G voice is considered HD, and is available at 12.66% of 94021 homes. 99.18% of homes can make calls using older 2G or 3G voice technology.
More about Verizon Wireless in 94021
Verizon Wireless Data Speeds and Coverage in 94021
Verizon Wireless covers 43.46% of homes in the zip with mobile data. The fastest cellular data speed available is 4G. Coverage by homes and land mass (the % of acres with cell coverage versus the total acreage in 94021) is shown below.
Tech |
% Homes |
% Land |
|---|---|---|
4G |
13.84% |
24.82% |
2G or 3G |
43.46% |
49.30% |
4G is the fastest cell coverage for 13.84% of homes. 0.00% of homes can only receive 2G or 3G data. We rank Verizon Wireless as #2 out of 3 for a combination of coverage and speed among 94021 mobile providers.
Verizon Wireless Voice Quality in 94021
4G voice is considered HD, and is available at 16.97% of 94021 homes. 16.47% of homes can make calls using older 2G or 3G voice technology.
Coverage percentages on this page are based on the percent of 94021 homes that would be covered by cellular service of any kind, unless specified as 94021 land area.
Fastest Cell Service Down to the 94021 Neighborhood
The map below shows where Verizon, AT&T, or T-Mobile are faster in 94021, CA. Areas with no clear winner are shown as ties.
Overall, 94021 ranks #3524 out of 3619 zip codes for the fastest mobile internet network speeds in California.
Best 94021 Cell Provider Key
The southeastern parts of the zip feature better overall coverage for faster data. The opposite is true in the central areas of 94021 where mobile data speeds are generally slower.
Best Coverage & Data Speeds in 94021, CA: AT&T Wireless
Among the largest cell phone companies in the United States, AT&T Wireless has the best speed and coverage in 94021. AT&T Wireless has 4G that covers 16.97% of the zip. Cell service of any type reaches 99.18% of 94021 homes.
Cheap Options for Mobile Service in 94021, CA
If the price of a 94021 mobile plan is a major concern for you, cheaper mobile plans are available as well. There are several options available in 94021 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 94021 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.
94021, CA Mobile Network Coverage Maps | Voice, 4G & 5G
94021 Fastest Speeds Key
Your mobile coverage in 94021 may vary based on your provider and location. The map above shows the fastest mobile data speeds in and around the zip. 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. 4G covers 15.54% of the zip. Overall, 99.18% of homes (161 people) and 99.9% of the land (2.5 square miles) are covered by some form of cell technology.
5G Coverage Map and Availability in 94021
94021 5G Coverage Key
5G networks in 94021 cover 0.00% of homes with 5G voice and data.
4G Coverage Map and Availability in 94021
94021 4G Coverage Key
4G/LTE networks have become one of the nation’s most common mobile coverage types for data, and in some locations, voice calls. In 94021, 12.30% of the area is covered by 4G data, and 15.54% is covered by 4G HD voice service. Verizon Wireless has the best 4G network in 94021 with 16.97% coverage.
Selecting the Best Cell Provider in 94021 for You
If you’re still struggling to choose a cell phone provider in the zip, some of these facts may help you decide:
- Coverage to 94021 houses is best with service from AT&T Wireless, with 99.18% of homes covered.
- The best coverage across all 94021 land is provided by AT&T Wireless at 99.90% of land area covered.
- The current best 4G coverage comes from Verizon Wireless reporting 16.97% in 94021.
- The best 2G or 3G coverage is obtainable with AT&T Wireless, covering 99.18% of 94021.
- The top estimated average speed in 94021, estimated at 6.69, Mbps is available through AT&T Wireless.
Mobile Service Zip Codes Near 94021
If you live near 94021 but aren’t technically in the zip, 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 94021: