Researchers from Ireland studied how much iOS and Android data is sent to Apple and Google
For example, Apple and Google receive IMEI devices,serial number of equipment, serial number of SIM card and IMSI, phone number and other data. Moreover, Android and iOS continue to transmit telemetry to their manufacturing companies, even if the user does not specifically disclose this data. In fact, as soon as a user inserts a SIM card into any device, the corresponding data is transmitted to the parent companies of each of them.
Sharing Android and Google data. Credit: Trinity College Dublin.
By the way, there is no way for users to avoidfor iOS devices to tell Apple the MAC addresses of nearby devices, as well as GPS location data. Indeed, these users don't even need to log in for the device to share data. On the other hand, Google collects much more data from nearby devices than Apple.
For comparison:Google gets about 1MB of data compared to 42KB for Apple. In standby mode, the Android Pixel sends about 1MB every 12 hours, while iOS sends 52KB. Google collects about 20 times more data from mobile phones than Apple.
Additional features such as iCloud, Safariand Siri send user data to Apple regardless of whether the user allows the action or even knows that their data is being transferred. On Google Android, such apps are broadcast by Chrome, YouTube, Google Docs, Google Messaging, Clock, Safetyhub, and Google Searchbar. The main reason these devices end up sending so much data has to do with connecting to an internal server that is automatically updated by the IP address. Once a company has an IP address, they can usually determine the corresponding geographic location.
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MAC address is a unique identifier,assigned to each unit of active equipment or some of their interfaces in computer Ethernet networks. When designing the Ethernet standard, it was envisaged that each network card must have a unique six-byte number, "stitched" into it during manufacture.