## [t3_u2mjx2](https://www.reddit.com/r/privacy/comments/u2mjx2/can_an_app_uniquely_identify_your_android_device/)
Let's say you have an app on a regular android phone and you uninstall it.
If you reinstall that same app under the following conditions:

- Your internet ip address has changed
- The phone is not linked to a google account
- The app has been re-installed through apk, not google play store
- you chanaged the device advertising-id in android settings (Under "Google")
- If the app requires a login, you clearly dont use the previous one
- you dont provide the app with your phone number or uniquely identifying permissions (contacts, media storage, etc.)
- you dont have another app from that same company of the app in question running on your devive

Is there still a way for this app to uniquely identify your device (aka "know it was you before and after") between the installs?

[Bonus question]: how does this also work on apple ios devices?

---

submitted to [r/Privacy & Freedom in the Information Age](https://www.reddit.com/r/Privacy & Freedom in the Information Age) by [u/Default-Guest](https://www.reddit.com/user/Default-Guest)