Android phones ping Google every 4.5 minutes

Android phones do not sit quietly when they are idle. A Trinity College Dublin study found a Google Pixel running Android contacted Google servers about every 4.5 minutes, even after the user turned off usage sharing. (scss.tcd.ie) The paper was published on March 25, 2021 by Douglas J. Leith at Trinity’s School of Computer Science and Statistics. He tested a Pixel phone running Android 10 and an iPhone 8 running iOS 13.6.1 after factory reset, while idle, during SIM changes, and while opening settings screens. (scss.tcd.ie) In plain terms, telemetry is the phone’s built-in status reporting system: software checks in with company servers for updates, diagnostics, and account services. Leith wrote that Android and iOS both do this as part of normal operation, but his measurements found Android sent much more handset data volume to Google than iOS sent to Apple. (scss.tcd.ie) The study said the traffic included identifiers such as the International Mobile Equipment Identity number, hardware serial number, SIM serial number, International Mobile Subscriber Identity number, and sometimes the phone number. It also said these transmissions continued even when the user had explicitly opted out of analytics sharing. (scss.tcd.ie) Trinity said the frequency of those connections could allow location tracking over time because every server contact exposes the phone’s Internet Protocol address, which is a rough location signal. The university’s March 29, 2021 summary said this happened even when location services were disabled. (tcd.ie) Google disputed one of the headline comparisons in the paper. In a response quoted in the later published chapter version, Google said it had “identified flaws” in the method used to measure data volume and disagreed with the claim that Android shared 20 times more data than an iPhone. (link.springer.com) Google has also said some background connections are required for security and software maintenance. A company statement quoted by Silicon Republic in March 2021 said the communications help keep Android up to date, secure, and running efficiently. (siliconrepublic.com) Users can still cut some optional sharing, but not all of it. Google’s Android help pages say turning off “Usage & diagnostics” stops that category of reporting, while “essential services” can still run, and Android also lets users delete or reset the advertising identifier used for ads. (support.google.com 1) (support.google.com 2) (support.google.com 3) Leith followed the 2021 handset paper with a second study on October 11, 2021 that examined six Android variants from Samsung, Xiaomi, Huawei, Realme, LineageOS, and /e/OS. Trinity said that work found “significant data collection and sharing, including with third parties, with no opt-out available to users.” (tcd.ie) The core finding from the original paper was narrower than many viral posts suggest: it measured background operating-system traffic on specific test devices under specific conditions. But the number that stuck — a Google contact roughly every 4.5 minutes while idle — came from the paper itself, not from the social-media retelling. (scss.tcd.ie)