Your phone is sharing data without your knowledge - how to stop it ASAP

The article explains that smartphones transmit data during idle periods, separating legitimate system telemetry from non-essential identifiers, location signals, and background analytics that can facilitate tracking and profiling, and highlights the privacy risks of such sharing. It offers actionable guidance to reduce exposure by auditing app permissions, limiting background refresh, restricting cloud backups, disabling personalized ads, and using a VPN.