Test devices are the mobile devices that you can preview your test story groups before going live. Add test devices to test and preview your stories on a selected mobile device. Your story groups with active and test status will appear on those test devices.
To add test devices you have to use IDFA for iOS and Advertising ID for Android devices. Here is how you can find the related identifiers;
For iOS Devices;
You have to download a 3rd party app to find the identifier. There are several apps for this purpose.
After downloading the app, you can find your IDFA and copy it to use.
For Android Devices;
To find your Android Advertising Identifier, simply open the Google Settings app on your Android device and click on “Ads.” Your Advertising Identifier will be listed at the bottom of the screen.
Both active and test story groups appear on test devices. You can set test devices through;
Name & Surname on Top Right
Settings → Test Devices
Up to 30 advertising IDs (Identifier for Advertising for iOS devices or the Google Advertising ID for Android devices) are allowed in the test devices list, you should list them as separated by new lines.