If you are planning to do a roadtrip down Highway 101 from Oregon to San Francisco (like I just did) – it’s a giant AT&T dead spot. My friend and I had service in Crescent City, Eureka, Ukiah, and a few other pockets, but no service for about 6.5 of the approximately 8 hour total drive time. It’s a gorgeous drive, but, if you have AT&T, make sure you are prepared to be off the cell radar for awhile before making the drive.