"Ads personalization: Data about your device, such as device name, model and operating system, screen resolution, browser type, country and language settings, internet provider, cellular net operator, network type. Your IP address and mobile device identifiers, such as your device ID, advertising ID, MAC address, geo-location, IMEI. Data obtained through third parties, such as your application store ID."
The company collects extensive device identifiers including advertising ID, MAC address, IMEI, and geo-location for ad personalization, and shares data with ads service providers and third-party cookie/tracking partners for measuring advertising effectiveness.