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Editorial Team
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Asked: 2026-05-20T18:41:06+00:00

I’m trying to get android unique id i’m using this code to get android

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I’m trying to get android unique id i’m using this code to get android unique id 

String phoneID = Secure.getString(getContext().getContentResolver(), Secure.ANDROID_ID);

when i use this code on sdk version 2.3 on emulator it work fine and return randomly generated android id, but when i use similar code in sdk version 2.0 it will return null,

i try this code also but same result,

String phoneID = System.getString(getContext().getContentResolver(), System.ANDROID_ID);

is there any another way to get android unique id? I’m testing my application on emulator.

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  1. Editorial Team

    See Stackoverflow – how-to-find-serial-number-of-android-device for other ways of getting unique ID for android device. Seva’s comment contains info about why you’re getting a NULL for ANDROID_ID:

    This ID comes from the Google account associated with the phone. The simulator typically does not have one. A real phone might not have one, either. Also, it’s documented as “can change upon factory reset”, and it can be changed arbitrarily anytime on a rooted phone.

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