Sure, if you want to get crazy with it you put prepaid phone in another location, put it on your Tailscale VPN then proxy all traffic through the prepaid phone with something like: https://github.com/kost/revsocks
replyPhone doesn't even need data if you have access to wifi wherever you stash it.
VPN chaining easier though.
Whole idea of "put phone in location X" alone is much harder to implement than to buy 5, 10 or 100 VPN account or servers with crypto and setup how you like.
replyLike you need to physically be there, need ability to connect phone it to electricity and somehow maintain if it e.g reboots. And stay anonymous while doing so? I'd say that Hollywood kind of solution.