Verizon currently ranks first for coverage in this area, with a coverage score of 95.9.Coverage rankings for San Diego
| Rank | Carrier | Score | Overall | 4G LTE | 5G | Fast 5G | Average Signal |
|---|---|---|---|---|---|---|---|
| 1 | Verizon | 95.9 | 99.6% | 99.5% | 95.0% | 88.0% | -91 dBm |
| 2 | T-Mobile | 94.1 | 96.6% | 96.6% | 90.9% | 81.0% | -84 dBm |
| 3 | AT&T | 86.1 | 96.1% | 96.0% | 89.8% | 63.7% | -103 dBm |
Scores include coverage area, network type, and average signal strength.
Map data © OpenStreetMap contributors, © CARTO. Rendered with MapLibre. FCC BDC mobile coverage processed by Compare Wireless Carriers.
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Cell phone coverage by network in San Diego
Verizon
- Overall
- 99.6%
- 4G LTE
- 99.5%
- 5G
- 95.0%
- Fast 5G
- 88.0%
T-Mobile
- Overall
- 96.6%
- 4G LTE
- 96.6%
- 5G
- 90.9%
- Fast 5G
- 81.0%
AT&T
- Overall
- 96.1%
- 4G LTE
- 96.0%
- 5G
- 89.8%
- Fast 5G
- 63.7%
County coverage is shown for surrounding-area context and uses land-area only coverage.
Coverage by ZIP code in San Diego
ZIP code areas can extend beyond city limits, so this table is best used for local comparison around the city.
| ZIP Code | AT&T | T-Mobile | Verizon |
|---|---|---|---|
| 92101 | 95.8% 95.8% 95.8% 72.3% -90 dBm | 95.8% 95.8% 95.8% 95.8% -69 dBm | 100.0% 100.0% 100.0% 100.0% -81 dBm |
| 92102 | 100.0% 100.0% 100.0% 76.0% -98 dBm | 100.0% 100.0% 100.0% 99.0% -79 dBm | 100.0% 100.0% 100.0% 100.0% -83 dBm |
| 92103 | 96.3% 95.1% 93.8% 71.6% -100 dBm | 100.0% 100.0% 100.0% 100.0% -77 dBm | 100.0% 100.0% 100.0% 95.1% -87 dBm |
| 92104 | 100.0% 100.0% 100.0% 85.4% -97 dBm | 100.0% 100.0% 100.0% 100.0% -78 dBm | 100.0% 100.0% 98.8% 98.8% -84 dBm |
| 92105 | 98.4% 98.4% 96.7% 81.3% -99 dBm | 100.0% 100.0% 100.0% 95.1% -80 dBm | 100.0% 100.0% 100.0% 95.9% -85 dBm |
| 92106 | 86.3% 86.3% 79.8% 57.3% -101 dBm | 89.5% 89.5% 84.7% 79.0% -83 dBm | 98.4% 98.4% 91.9% 86.3% -90 dBm |
| 92107 | 100.0% 100.0% 98.4% 81.3% -101 dBm | 100.0% 100.0% 92.2% 78.1% -85 dBm | 100.0% 100.0% 93.8% 87.5% -86 dBm |
| 92108 | 100.0% 100.0% 100.0% 88.5% -92 dBm | 100.0% 100.0% 100.0% 100.0% -70 dBm | 100.0% 100.0% 99.0% 99.0% -85 dBm |
| 92109 | 96.4% 95.9% 96.4% 72.8% -97 dBm | 96.4% 96.4% 92.9% 82.2% -82 dBm | 100.0% 100.0% 85.2% 79.3% -84 dBm |
| 92110 | 100.0% 100.0% 100.0% 76.4% -97 dBm | 100.0% 100.0% 100.0% 100.0% -76 dBm | 100.0% 100.0% 100.0% 99.1% -77 dBm |
| 92111 | 100.0% 100.0% 100.0% 75.0% -97 dBm | 100.0% 100.0% 100.0% 98.4% -79 dBm | 100.0% 100.0% 100.0% 97.8% -82 dBm |
| 92113 | 99.0% 99.0% 99.0% 79.8% -97 dBm | 99.0% 99.0% 99.0% 99.0% -76 dBm | 100.0% 100.0% 100.0% 99.0% -88 dBm |
| 92114 | 99.4% 99.4% 99.4% 78.0% -102 dBm | 100.0% 100.0% 98.3% 91.5% -82 dBm | 100.0% 100.0% 100.0% 97.7% -94 dBm |
| 92115 | 100.0% 100.0% 100.0% 80.0% -98 dBm | 100.0% 100.0% 96.9% 89.2% -80 dBm | 100.0% 100.0% 99.2% 94.6% -86 dBm |
| 92116 | 100.0% 100.0% 98.6% 57.5% -102 dBm | 100.0% 100.0% 98.6% 94.5% -81 dBm | 100.0% 100.0% 97.3% 94.5% -89 dBm |
| 92117 | 100.0% 98.9% 97.9% 66.5% -102 dBm | 100.0% 100.0% 96.8% 89.9% -84 dBm | 100.0% 100.0% 98.9% 92.0% -87 dBm |
| 92119 | 100.0% 99.3% 97.9% 62.9% -106 dBm | 100.0% 100.0% 91.4% 75.0% -89 dBm | 100.0% 100.0% 96.4% 88.6% -89 dBm |
| 92120 | 98.8% 98.8% 97.6% 58.9% -104 dBm | 100.0% 100.0% 99.4% 90.5% -83 dBm | 100.0% 100.0% 98.8% 95.2% -86 dBm |
| 92121 | 99.6% 99.6% 98.5% 68.1% -99 dBm | 99.3% 99.3% 98.9% 96.3% -77 dBm | 100.0% 100.0% 99.3% 95.9% -90 dBm |
| 92122 | 100.0% 100.0% 98.3% 63.6% -98 dBm | 100.0% 100.0% 97.5% 94.1% -83 dBm | 100.0% 100.0% 100.0% 98.3% -82 dBm |
| 92123 | 100.0% 100.0% 97.8% 68.3% -102 dBm | 100.0% 100.0% 100.0% 97.8% -77 dBm | 100.0% 100.0% 98.9% 94.6% -89 dBm |
| 92124 | 98.1% 98.1% 90.1% 61.3% -106 dBm | 99.5% 99.5% 97.6% 83.0% -86 dBm | 99.5% 99.5% 93.4% 86.8% -94 dBm |
| 92126 | 100.0% 100.0% 95.6% 64.4% -101 dBm | 98.8% 98.8% 92.8% 85.2% -83 dBm | 100.0% 100.0% 96.4% 91.2% -91 dBm |
| 92127 | 99.4% 99.4% 88.1% 56.4% -109 dBm | 99.8% 99.8% 98.4% 93.5% -83 dBm | 100.0% 100.0% 96.7% 87.9% -93 dBm |
| 92128 | 100.0% 100.0% 98.5% 78.1% -103 dBm | 100.0% 100.0% 99.2% 91.9% -83 dBm | 100.0% 100.0% 99.6% 98.1% -87 dBm |
Where Did These Numbers Come From And What Do They Mean?
The numbers all come from publicly available data provided to the FCC by each wireless carrier. The raw data is available to download from the FCC’s National Broadband Coverage Map which was last updated in June of 2025. The Compare Wireless Carriers website has used this data to derive the numbers you see in the carrier cards shown above.
The percent covered represents the percentage of the city that is covered by any signal from a carrier, either strong, weak, or anything in between. In a majority of cases it is simply the percentage of land area in a given zip code that is covered by a signal, although in some cases water area covered is also used.
The signal strength meter bars shows you the average signal you can expect to receive in any given area in San Diego, CA that actually has coverage.
What To Do If You Don’t Get A Signal Where A Carrier Says You Should?
The FCC National Broadband Coverage Map and its associated speed test app are unique in the market. The speed test app is the only one on the market that the FCC holds carriers accountable to. Yes, you the consumer can use the FCC’s speed test app to inform the FCC that the data provided to them by a carrier is completely inaccurate. If you aren’t getting a cell signal in a spot a carrier claims you will, use the app and report it to the FCC. The carriers will have to answer to the FCC over your report. It’s pretty powerful stuff.
So Which Carrier And Plan Are Really Right For You?
Just because one or more of the carriers above have good coverage for you in San Diego, CA, doesn’t mean you have to subscribe to that carrier for your wireless service.
Have you ever heard of the term “MVNO”?
Most people haven’t, yet tens of millions of wireless subscribers have their service provided to them by an MVNO. Simply put, an MVNO is any wireless provider that doesn’t have its own wireless network. Instead, they use another carrier’s network for service.
There are literally dozens of wireless providers that use either AT&T’s, T-Mobile’s, or Verizon’s network to provide service to their customers. Some MVNOs let their customers pick from any of those three major carrier networks for their coverage while others may only offer one carrier to choose from. MVNOs offer the same types of plans as the major carriers including unlimited data plans and plans with a finite amount of data so you don’t waste money on something you don’t need.
Most MVNOs operate as no credit check prepaid providers, although a small number of them offer postpaid services. MVNOs can offer you a great way to save money on your wireless bill. Some carrier-owned prepaid providers like AT&T’s Cricket Wireless, T-Mobile’s Metro by T-Mobile, and Verizon’s Straight Talk Wireless and Visible brands can also be great money-saving options.
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