"We may also collect and use your device identifiers to display and personalize in-game ads and serve behaviorally targeted advertising. Where applicable, we may collect your advertising identifier (IDFA, GAID), vendor identifier, IP address, device ID and other device identifiers (country, os version, device model, client version) for these purposes."
Supercell collects a wide range of device identifiers including advertising IDs, vendor IDs, device IDs, OS version, device model, browser type, mobile carrier, and ISP — much of which is used for advertising rather than core game functionality.
