The main problem with this (from a stock android perspective) is Google play services. Your private phone/daily driver would literally have to be a non-stock rom or one that doesn’t come with Google play services installed at all. Because otherwise Google and other companies linked to them will fingerprint your device and link it that way because those two devices are often in the same place at the same time or on the same network at the same or similar times etc. The and even when you think you’ve given the apps no permissions, Google has a habit of turning this stuff on (location data, telemetry etc) and gathering it in the background.
The main problem with this (from a stock android perspective) is Google play services. Your private phone/daily driver would literally have to be a non-stock rom or one that doesn’t come with Google play services installed at all. Because otherwise Google and other companies linked to them will fingerprint your device and link it that way because those two devices are often in the same place at the same time or on the same network at the same or similar times etc. The and even when you think you’ve given the apps no permissions, Google has a habit of turning this stuff on (location data, telemetry etc) and gathering it in the background.
https://www.abc.net.au/news/2025-11-02/social-media-ban-algorithm-phone-addiction-instagram-x-tiktok-/105844066
https://www.howtogeek.com/how-google-tracks-and-scans-everything-on-your-android-device/