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I need a Unique ID or Number all time, If device formate or flash.

Gprakash
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    Does this answer your question? [Is there an equivalent to iOS' identifierForVendor for android?](https://stackoverflow.com/questions/14657977/is-there-an-equivalent-to-ios-identifierforvendor-for-android) – sleepystar96 Feb 23 '23 at 07:17
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    Nothing can help you.! after factory reset. – J.K Feb 23 '23 at 09:11
  • @J.K Is there any possibility to get unique values of device ID or IMEI or any ... after flash OR factory reset ? – Gprakash Feb 23 '23 at 10:16

2 Answers2

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For Android development, you can use a universally unique identifier (UUID) to generate a unique ID that can persist even if the device is formatted or flashed.

import java.util.UUID;

UUID uuid = UUID.randomUUID();
String uniqueId = uuid.toString();
Masum
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  • I don't think this answers the question. OP wants an identifier that survives factory reset of a device. – sleepystar96 Feb 23 '23 at 07:16
  • If device factory reset UUID change every time. My requirement is no need to change even factory reset or flash device. – Gprakash Feb 23 '23 at 07:25
  • Then You may use IMEI. However, I should clarify that the permanent identification that you are looking for is not currently available on Android devices. – Masum Feb 23 '23 at 17:21
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Try using Mac address of the device

Ramakrishnan
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  • Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Mar 01 '23 at 12:07