Flagtown, NJ 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 Flagtown, NJ zip codes, this guide compares the top-performing networks and the cheapest plans that use them.

Coverage rankings for Flagtown, NJ

Verizon currently ranks first for coverage in this area, with a coverage score of 80.7. Compare Wireless Carriers uses FCC broadband map data to estimate and calculate coverage scores. More on that further below.


RankCarrierScoreOverall4G LTE5GFast 5GAverage Signal
1Verizon80.7100.0%100.0%65.9%39.0% -93 dBm
2T-Mobile71.887.8%87.8%65.9%31.7% -98 dBm
3AT&T68.297.6%97.6%87.8%9.8% -112 dBm

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


Cell phone coverage map for Flagtown, NJ

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 Flagtown, NJ

#1

Verizon

Coverage Score 80.7
In Flagtown, NJ
Overall
100.0%
4G LTE
100.0%
5G
65.9%
Fast 5G
39.0%
Average Signal -93 dBm
Somerset County, NJ covered 99.9%
#2

T-Mobile

Coverage Score 71.8
In Flagtown, NJ
Overall
87.8%
4G LTE
87.8%
5G
65.9%
Fast 5G
31.7%
Average Signal -98 dBm
Somerset County, NJ covered 89.5%
#3

AT&T

Coverage Score 68.2
In Flagtown, NJ
Overall
97.6%
4G LTE
97.6%
5G
87.8%
Fast 5G
9.8%
Average Signal -112 dBm
Somerset County, NJ covered 98.8%

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

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Coverage by ZIP code in Flagtown, NJ

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

ZIP CodeAT&TT-MobileVerizon
08821 100.0% 100.0% 100.0% 0.0% -113 dBm 100.0% 100.0% 75.0% 0.0% -103 dBm 100.0% 100.0% 50.0% 25.0% -85 dBm
08844 97.3% 97.2% 91.5% 42.9% -107 dBm 91.8% 91.8% 81.9% 59.9% -91 dBm 100.0% 100.0% 70.1% 45.8% -91 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 Flagtown, NJ 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.