"Much of this information needs to be sent to the manufacturer to keep your device up to date and functioning properly. With that goal in mind, your phone might share any of the following tidbits: Device identifiers such as IMEI numbers, hardware serial numbers, and SIM details Telemetry data about the device's system status or health Service checks for push notifications and operating system updates Crash logs or diagnostic analytics The connectivity state, such as Wi-Fi vs. mobile Content updates, including news, social feeds, and synced emails"
"The above are legitimate reasons for idle data transmissions, NordVPN CTO Marijus Briedis said in a news release. It's needed for system health reporting, operating system update availability checks, network and connectivity management, and content synchronization for email and messages."
"Persistent identifiers. Device IDs and advertising IDs for mobile apps can be transmitted even though they aren't needed to keep your phone operating. Instead, such IDs allow companies and advertisers to track and link your activity across their apps and services. Armed with this information, these parties can build behavio"
Smartphones transmit data during idle periods to manufacturers and other parties for both necessary maintenance and optional tracking. Necessary transmissions support system health reporting, operating system update checks, connectivity management, push notifications, crash diagnostics, and content synchronization. Transmitted items can include IMEI and hardware identifiers, telemetry, update checks, crash logs, connectivity state, and synced content. Nonessential transmissions include persistent device and advertising identifiers that enable cross-app tracking by companies and advertisers and can infringe on user privacy. Regularly review and revoke unneeded app permissions, disable unnecessary identifiers, and use privacy tools to reduce unwanted data sharing.
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