| T-Mobile | 7785 Hwy 175 | Dead zone from 2 miles north of Junction at 29 and 281 until Kelseyville. | 2019 |
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| T-Mobile | 20239 State Hwy 20 | Dead zone from 2 miles east of junction of Highway 53 and 20 until 5 miles west of Williams. | 2019 |
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| Sprint | 250 Henry Station Rd | Sprint (CREDO) 3G signal shows on phone but NO data or internet access available all up and down US Route 101. This is horrible! I just bought into Sprint (via CREDO), and have an IPhone 6s. Nothing works! Nada. Even TXT messages were delayed, and I didn't get one until 2 days later, when I returned to Berkeley. | 2019 |
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| AT&T | 1420 Wilson Rd | Signal OK up to a couple of years ago. Now I get no signal on my android cell phone. Good coverage in Cloverdale proper, but my property is just 2 miles east outside the city in a small canyon. AT&T store in Santa Rosa looks on their computer that shows coverage and offers no explanation. | 2015 |
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| AT&T | 122 N Main St | I get good service in Cloverdale | 2015 |
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