| Verizon | 7182 Snow Peak Ct | Consistent dropped calls and dead zone | 2019 |
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| AT&T | 1725 Sicily Dr | Always poor reception. one or two bars usually. | 2015 |
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| Verizon | 1704 Roma Ct | Spotty coverage, lots of dropped calls.
Phone will beep when making a call to indicate it switching to analog line or other. 50-50 of when a call is actually completed without being disconnected | 2015 |
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| Verizon | 4126 Arezzo Dr | Verizon LTE unusable. Coverage map lies in this entire area. Lucky to see 3G around the entire square mile. Some of the neighborhoods a few streets to the south are 1x or no service. | 2014 |
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| Verizon | 1731 Venice Ln | Horrible service. Dropped calls all of the time, bad reception. | 2019 |
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| Sprint | 421 S Parkside Dr | Poor 3G coverage. No 4G coverage. | 2019 |
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| T-Mobile | 1133 Alder Way | I get 1 bar at the most. Call quality is bad and usually drops. I often can't send text messages. | 2015 |
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| T-Mobile | 6140 Saddleback Ave | only service is Edge, which is worthless. | 2014 |
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| Verizon | 6880 Silverleaf Ave | Little to no service for phone calls inside the house or out in the yard or even the street. | 2016 |
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| Verizon | 2801 Nelson Rd | Around apartments, have 2/5 bars on a good day. | 2014 |
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| T-Mobile | 1510 Nelson Rd | Complete dead zone... not able to make/receive calls or use data. | 2019 |
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| AT&T | 666 Coffman St | Dead Zone - entire downtown | 2015 |
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| AT&T | 736 Main St | 4-8 block area around here where cell coverage for data and phone is almost non-extstent | 2019 |
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| AT&T | 1013 Main St | I can hardly get more than two bars anywhere in Longmont. I can only make or receive calls if I use Wi-Fi calling. The sound quality is still poor or it may take several tries to connect. | 2019 |
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| AT&T | 1343 Alpine St | Tower switching contantly, roams, and no voice indoors | 2015 |
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| AT&T | 3224 Lake Park Way | Frequent dropped calls. | 2015 |
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