"The data that a smartphone transmits in a continuous loop can be divided into two categories: legitimate data that maintains the functionality of the device, and sensitive data that is used for tracking, advertising and other purposes. It is not always clear which data falls into which category. For example, if your device sends diagnostic data and reports to the manufacturer or app developers, this may be necessary and important. However, it usually also requires your consent."
"In addition, smartphones transmit a lot of other information, including your location, device and advertising IDs, usage patterns and other data that is combined and used to create detailed profiles and deliver targeted advertising that promises a higher success rate. As early as 2025, it emerged that Android users were being specifically spied on by large companies such as Meta and Yandex."
When left on standby, smartphones continuously send and receive data. Some transmissions are necessary for updates and diagnostic purposes, while others include location, device and advertising IDs, usage patterns and other personal information. Such sensitive data can be combined to create detailed user profiles and deliver highly targeted advertising. Diagnostic and telemetry data often require user consent but may still be shared. Large companies have been shown to collect data from Android devices, and evidence suggests devices can trigger targeted ads that reflect recent private conversations. Options exist to limit or control data sharing.
Read at Tech Advisor
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