| Verizon | 8030 Newell St | No cell service on newell and about 3 blocks along eastern ave. | 2015 |
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| Verizon | Eastern Ave + 16th St | No service when I move away from the window. | 2014 |
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| AT&T | 10316 Tenbrook Dr | Incoming calls do not arrive about 50% of the time. Outgoing OK | 2014 |
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| Verizon | 2404 Plyers Mill Rd | Very poor Verizon reception. Cell calls drop frequently, often only 3G data available rather than 4G. | 2014 |
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| Sprint | 10903 New Hampshire Ave | Dead zone entire rear of FDA campus | 2019 |
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| T-Mobile | Building 2, New Hampshire Ave | Dead zone for T-mobile indoors by a window. At best I can get an edge data connection. If you work at FDA, get Verizon. | 2014 |
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| T-Mobile | 13101 Matey Rd | Real low internet speeds | 2015 |
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| Verizon | 13340 New Hampshire Ave | Can't hear me and dropped coverage
Briggs Chaney road and Cantrell Wireless Premium Retailer, New Hampshire Avenue, Silver Spring, MD, United States | 2019 |
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| AT&T | 14201 Ansted Rd | 1 bar cellular coverage that switches between LTE and 4G | 2015 |
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| Verizon | 2105 Steuben Way | Sometimes (clear days) 2 bars Max, dropped calls regularly | 2016 |
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| T-Mobile | 14600 Carona Dr | No signal indoors | 2014 |
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| AT&T | 104 Gleneagles Dr | Dead zones throughout most of Leisure World community. | 2015 |
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| Verizon | 15105 Peach Orchard Rd | 1 bar, rarely two. Very poor coverage | 2019 |
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