There are location services that use the strength of nearby wifi, and Bluetooth beacons to guess where you are by comparing what you phone sees with a massive database, such as the Mozilla Location Services (link) but they won't work if you are in the middle of nowhere. Source: about 1 year ago

Echo "0000000100101000110000000,0111110110100110110111110 0100010100110011110100010,0100010111000110110100010 0100010110011110010100010,0111110101010001010111110 0000000101010101010000000,1111111110111010111111111 0101110010100010011011010,0111101111101111110001000 1001010100000000011001101,0010001110100100011111100 1001100101101000000000010,1011001011111000011011100... Source: about 1 year ago

This means that MLS falls back to using the sender's IP address to determine the location. So it being hundreds of kilometers off is definitely in the realm of possibilities. Does this device have wifi? Is it turned on? Source: about 1 year ago

One source of location data are wifi access points. Geoclue sends the MAC addresses and signal strengths of the access points that your system sees at the moment to a service operated by Mozilla https://location.services.mozilla.com/. That service uses that data to calculate your approximate location based on a database of access point locations. So if you're using the same access point now that you used in your... Source: about 1 year ago

It ostensibly functions by talking to other providers, such as Mozilla Location Services (MLS) to do the exact same process. So you're just trusting Mozilla (and others) with your information rather than Google. Source: over 1 year ago

Probably, but it would "trash which "cohort" Google thinks I belong in"; there's really no reason to fool Google into putting you into a specific cohort as opposed to just a random/"broken" one; either way, your true cohort is obscured. Unless you were studying the impact of ads you receive based on cohort, like https://their.tube. - Source: Hacker News / about 3 years ago