Yeah. I keep my Authy backup password in a tiny safe along with other important documents (note: NOT in my password manager, since that would reduce 2FA to 1FA)

Yeah. I keep my Authy backup password in a tiny safe along with other important documents (note: NOT in my password manager, since that would reduce 2FA to 1FA). Last time my phone died a couple years back I just got a new one, registered it to my phone number, downloaded Authy, verified the phone number, entered my paper backup password, and I was good to go. The way Authy is set up this makes me immune to SIM cloning attacks, because they offer no recovery method if you lose your backup password. As an additional 2FA backup I keep one of those cheap Yubico security keys in the safe, registered to as many sites as will accept them.