AT&T currently ranks first for coverage in this area, with a coverage score of 89.6. Compare Wireless Carriers uses data from the FCC's broadband map to estimate and calculate coverage scores for this area. More on that further below.
Rank
Carrier
Score
Overall
4G LTE
5G
Fast 5G
Average Signal
1
AT&T
89.6
100.0%
100.0%
94.6%
76.6%
-108 dBm
2
Verizon
58.9
100.0%
100.0%
6.8%
0.0%
-90 dBm
3
T-Mobile
18.8
18.6%
18.6%
8.4%
0.0%
-105 dBm
Scores include coverage area, network type, and average signal strength.
Coverage Key
Less coveredMore covered
Darker areas mean the carrier covers more of that location.
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
55017
100.0% 100.0% 94.6% 76.6% -108 dBm
18.6% 18.6% 8.4% 0.0% -105 dBm
100.0% 100.0% 6.8% 0.0% -90 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 Dalbo, MN 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.