An investigation by online news service Quartz reveals that Android smartphones continue to collect and send data to Google even if these settings are voluntarily turned off by users. Quartz says Google is collecting the addresses of nearby mobile phone masts and sending them back to Google. The details were collected even when location services were turned off on the phones, no apps had been installed and there was no SIM card in the phone
A Google spokesperson told Quartz that the cell tower addresses were included in information sent to the system Google uses to manage push notifications and messages on Android phones since early 2017. While it is understandable that Google and its apps require location data for improved accuracy, it is alarming that user settings are so blatantly disregarded by the core OS. Granted, there's no imminent danger of getting hacked or exploited simply by sharing location data, the lack of transparency and the cavalier attitude Google has taken with user location data raises a red flag for other types of user data the company might be collecting. In response, Google is saying that it isn't storing this data and it will turn off the collection feature so it works as originally advertised.
Source: Quartz