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kotlinlang

I have a doubt ,
Out of the total number of registered devices we have in our db , we have found that around 5 %  of them has invalid *google ad-ids (GAID)* 
Like ""(empty)  or  0000-0000....

The numbers are in millions

Is it normal or  expected to have some discrepancy percentage ?

<https://support.google.com/googleplay/android-developer/answer/6048248?hl=en>
&gt; the advertising ID will be removed when a user deletes their advertising ID in Android Settings. Any attempts to access the identifier will receive a string of zeros instead of the identifier.

similarly, ios also returns all 0's <https://developer.apple.com/documentation/adsupport/asidentifiermanager/advertisingidentifier>

and either way, this is not a Kotlin issue so take discussion to somewhere else. see the channel topic