Device ID

Changes 3.3 : Bug fix for Lolipop.
Bug fixes for old Android phones.

APK Description:

Simple app to display different UNIQUE Device IDs

Google Service Framework Android ID

A 64-bit number generated on the device's first log in and remains constant for the lifetime of the device. (Changes on factory reset)

Build.SERIAL

A hardware serial number, if available. Usually this value is 'null' or 'unknown'

Settings.Secure.ANDROID_ID (available for Android >= 2.3)

A 64-bit number generated on the device's first boot and should remain constant for the lifetime of the device. ( value may change if a factory reset is performed on the device.)

Using telephony Manager

This is null if device ID is not available i.e. non calling Tablets.

Universal Unique Identifier Generated by this application)

A 8-4-4-4-12 digit hex string, that represents a Universal Unique Identifier for the device.