

I think it depends what’s on your phone. I don’t use mine for email or banking; it’s 2FA, phone calls, and a map. I’m using a Galaxy S8 that I purchased in the summer of 2017, and I don’t get any updates any more.
If I had bank account information or access to other sensitive data I’d be a lot more concerned.
My biggest problem is apps that stop working. My carrier doesn’t support my phone with their voicemail app, for example.
Even if Illinois was feasible, I don’t think I’d want that. I’d rather fix the system. And quit dancing around the issue of Puerto Rico statehood.