Good day, just want to share my experience,
I am using 2fa as my security in my emails and exchange accounts, so one day I nearly lost my phone and that phone holds majority of my pins, 2fa, etc. so I thought I lost all, luckily I found the phone. So now I'm thinking of buying an extra phone for backup. What else do you recommend for backup?
I dont know what kind gf backup youre really getting at, but if you mean backing up our wallets, thats important if youre making use of wallets that doesnt require sign-up.
You will have to back up your wallet and keep those 12 words safe, in case you lose your phone or whatever it is youre using, you will be able to restore your funds back when you get a new device. As for wallets like Xapo and Coinbase, there is nothing like backup once you sign in you will see your funds right there in your wallet ready for you to use it.