San Diego, CA Cell Phone Coverage Map & Network Rankings (2026)

Don’t overpay for a network that struggles where you actually use your phone.

Using FCC mobile coverage data across San Diego, CA zip codes, this guide compares the top-performing networks and the cheapest plans that use them.

Coverage rankings for San Diego, CA

T-Mobile currently ranks first for coverage in this area, with a coverage score of 93.3. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.


RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1T-Mobile93.396.6%96.6%90.9%81.0% -84 dBm
2Verizon92.599.6%99.5%95.0%88.0% -91 dBm
3AT&T79.496.1%96.0%89.8%63.7% -103 dBm

Scores include coverage area, network type, and average signal strength.


Cell phone coverage map for San Diego, CA

Zoom in for local detail. Tap or click a colored area to see coverage and signal details. On mobile, use two fingers to move the map.

Coverage Key
Less covered More covered
Darker areas mean the carrier covers more of that location.

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, CA

#1

T-Mobile

Coverage Score 93.3
In San Diego, CA
Overall
96.6%
4G LTE
96.6%
5G
90.9%
Fast 5G
81.0%
Average Signal -84 dBm
San Diego County, CA covered 71.7%
#2

Verizon

Coverage Score 92.5
In San Diego, CA
Overall
99.6%
4G LTE
99.5%
5G
95.0%
Fast 5G
88.0%
Average Signal -91 dBm
San Diego County, CA covered 77.7%
#3

AT&T

Coverage Score 79.4
In San Diego, CA
Overall
96.1%
4G LTE
96.0%
5G
89.8%
Fast 5G
63.7%
Average Signal -103 dBm
San Diego County, CA covered 73.4%

County coverage is shown for surrounding-area context and uses land-area only coverage.

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Coverage by ZIP code in San Diego, CA

ZIP code areas can extend beyond city limits, so this table is best used for local comparison around the city.

ZIP CodeAT&TT-MobileVerizon
91911 98.9% 98.6% 98.9% 82.2% -100 dBm 100.0% 100.0% 98.6% 97.1% -77 dBm 100.0% 100.0% 99.6% 98.9% -86 dBm
92014 100.0% 100.0% 99.3% 71.1% -100 dBm 100.0% 100.0% 95.8% 76.1% -84 dBm 100.0% 100.0% 98.6% 91.5% -89 dBm
92025 96.9% 96.9% 82.0% 63.2% -105 dBm 99.0% 99.0% 90.1% 76.2% -87 dBm 99.6% 99.6% 87.2% 72.9% -96 dBm
92027 87.1% 86.9% 55.5% 36.3% -111 dBm 91.3% 91.3% 77.6% 55.0% -92 dBm 96.3% 96.3% 73.8% 50.5% -102 dBm
92029 98.8% 98.6% 89.7% 66.0% -105 dBm 98.2% 98.2% 95.3% 83.0% -85 dBm 99.6% 99.6% 88.7% 66.6% -99 dBm
92037 100.0% 100.0% 99.2% 70.4% -102 dBm 99.2% 99.2% 90.5% 72.3% -87 dBm 100.0% 100.0% 97.6% 85.4% -91 dBm
92065 82.9% 82.9% 49.4% 35.3% -112 dBm 88.7% 88.6% 80.8% 65.6% -89 dBm 90.0% 89.6% 61.9% 41.2% -99 dBm
92067 99.6% 99.2% 89.4% 57.5% -111 dBm 99.0% 99.0% 88.8% 62.0% -92 dBm 99.8% 99.8% 99.2% 83.8% -97 dBm
92071 92.2% 92.2% 86.1% 54.9% -105 dBm 96.1% 96.1% 89.8% 79.5% -85 dBm 99.0% 98.5% 92.9% 85.9% -90 dBm
92075 100.0% 100.0% 98.6% 65.8% -102 dBm 100.0% 100.0% 100.0% 89.0% -84 dBm 100.0% 100.0% 93.2% 78.1% -98 dBm
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

About The Coverage Data

Coverage and signal estimates are derived by Compare Wireless Carriers from carrier-reported data in the FCC’s National Broadband Coverage Map, last updated in June 2025. “Percent covered” shows how much of the city or ZIP code area has a carrier signal, whether weak or strong. Signal bars show the estimated average signal strength in areas of San Diego, CA where that carrier has coverage.

If a carrier says you should have service but you do not, run a challenge test with the FCC Mobile Speed Test App. The FCC uses those results to check carrier-submitted coverage data and requires a carrier response when enough tests show a pattern of inaccurate coverage reporting.