Yes, and AT&T too. It's non-existent at my house in Tam Valley (unincorporated Marin county but Mill Valley post office and school district), except for the ext

Yes, and AT&T too. It's non-existent at my house in Tam Valley (unincorporated Marin county but Mill Valley post office and school district), except for the extreme back corner of my garden. More worryingly, basic cellphone coverage is not even available at some of the Mill Valley elementary schools. When there was an active shooter situation earlier this year at an apartment complex near one school, there was no way to call most people at the school to check on them or to let them know.