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?
You can also backup the the data on your phone either on a hard drive or in the cloud. I think this is critical if you have everything on your smartphone.
You will need to be able to recover everything in the event that you lose your phone or drop it in water, etc.
You really dont need to buy a backup phone as long as you backup the data on the phone that you use everyday.