Device Info Android :

- Serial Number
- Android ID
- Google Services key (GSF)
- and more...

Android Device ID : A 64-bit number (as a hex string) that is randomly generated when the user first sets up the device and should remain constant for the lifetime of the user's device.

GSF key : Google Services Framework key is the specific alpha-numeric Google Identification code associated with your mobile device. It is used to identify your device for market downloads on the play store that needs to identify your device. The Android Device GSF key may also be needed in order for Customer Support to assist you with certain issues.

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