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?
No need to buy a new phone just save a 2FA code or keep the barcode when you create it in a safe place. If your mobile phone at any time lost you can use it again by entering the code or scan barcode that you save it.
Having a clean hard drive for back up and keeping it on a safe place is the best and that is correct that you should have 2fa in order to have another layer of security so you will not get in a high risk and you will not get a high chance of getting hacked with that 2fa. You can also have a strong layer of security if you will have a strong password which consists of letters, numbers and special characters.