How do I remove advertisingIdentifier selectors from the Unity SDK on iOS?

If you have been advised to remove the advertisingIdentifier or isAdvertisingTrackingEnabled selectors from the Unity SDK, you have two options.

Option 1 - Update to a recent version of Unity

This issue should now be resolved in all supported versions of Unity. Upgrade to one of the following versions or later:

• 2019.3.4+
• 2018.4.19+
• 2017.4.38+
• All versions of 2020.1 and 2020.2

Option 2 - Remove the specific selectors from the XCode project manually

If you are unable to upgrade to a new version of Unity, you can modify the XCode project generated by Unity to make the necessary changes.

1. Open the file DeviceSettings.mm within your Xcode project.
2. Find and remove the line
   

   #include <AdSupport/ASIdentifierManager.h>

3. Find and completely remove the function “QueryASIdentifierManager"
4. Find the function "UnityAdvertisingIdentifier" and replace it with:

extern "C" const char* UnityAdvertisingIdentifier()

{
    return NULL;
}

5. Find the function “UnityAdvertisingTrackingEnabled” and replace it with:

extern "C" int UnityAdvertisingTrackingEnabled()

{
    return 0;
}

Note: The process might vary slightly depending on the version of Unity. There is a walkthrough with similar steps available in the forums.

If you continue to use an older version of Unity, you will need to manually re-apply these edits each time you generate an XCode project. To make these changes permanent for all future builds, update the master template for this file:

On Windows:

<Install Folder>\Editor\Data\PlaybackEngines\iOSSupport\Trampoline\Classes\Unity

On Mac OS:

<Install Folder>/Contents/PlaybackEngines/iPhonePlayer/iPhone-Trampoline/Classes/Unity

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