AirPods will still play music and you'll be able to use active noise cancellation, but basically all of the other smart features they offer will be off the table, partly because there's no way to control their settings on Android. So, you won't be able to use Spatial Audio, you won't be able to personalize the sound or check the quality of the ear tip fit, you can't visually check the remaining battery, you won't be able to use the Find My network features, you won't be able to share audio with other AirPods, and there won't be any auto-switching between devices.