Easy to get Device ID (Google Service Framework - GSF), Android ID and more info
Easy to get Device ID for Android
Device ID
The Google Services Framework Identifier (GSF ID) is a unique 16 character hexadecimal number that your device automatically requests from Google as soon as you log to your Google Account for the first time. For a specific device, the GSF ID will change only after a factory reset.
Android ID
On Android 8.0 (API level 26) and higher versions of the platform, a 64-bit number (expressed as a hexadecimal string), unique to each combination of app-signing key, user, and device. Values of ANDROID_ID are scoped by signing key and user. The value may change if a factory reset is performed on the device or if an APK signing key changes.
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