Recent ruling by California Supreme Court says any city has "inherent local police power” under the California Constitution to determine the appropriate uses of land within its jurisdiction. That includes cell phone towers so a city (like Sunnyvale) can tell a phone co. to adhere to city zoning standards for aesthetics.
More here:
http://www.cacities.org/Top/News/News-Articles/2019/April/California-Supreme-Court-Upholds-Local-Ordinance-R
The opinion is here:
https://www.courts.ca.gov/opinions/documents/S238001.PDF
