Apple iPhone iOS apps can read sensor measurements without permission: Facebook can infer valuable and precise information about users with mere Accelerometer data?
Smartphone manufacturers custom skin, services, and preinstalled apps collect user data even if not used: Google’s Advertising ID restrictions circumvented too?
Apple iPhone devices are no better at shielding user data from exfiltration: Comparative study between iOS and Android apps reveals severe concerns about privacy
Major Android smartphone OS, including Custom ROM, constantly beaming telemetry data with no way to turn it off, leaving users powerless?