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 think you should not buying new phone just for back up your 2FA. You can back up the bar code and restore the 2FA. I am already have experience about this and lucky for me, i am back up that code, so when i have a new phone, i am just filling that code on google autheticator