As part of my work, I typically carry 2-3 phones on me at a time from various manufacturers. One of them is my personal phone, which I will potentially put GrapheneOS on, if it truly does come to Samsung Snapdragon phones. The other two cannot have GrapheneOS on them. One is iOS, the other is a Samsung.
I imagine that carrying around multiple devices throughout the day probably isn’t helpful for my privacy. Even if I did get GOS on my personal phone, would the privacy benefits be somewhat negated by having the GPS, camera, microphone, etc. of other phones just constantly following it around, 1:1 all the time?