[ikk157]

Using 2FA with SMS might be an alternative if you lose access token for your Authenticator application!
But if you are afraid of that I suggest you use Authy, they store that data on their Cloud Server which is absolutely safe!

And btw, using SMS may require additional fees because most providers do not provide free SMS sending services!

As much as storing the keys in the Cloud with Authy would somewhat solve the problem of getting locked out of your account, it eliminates the majority of the security that 2FA is supposed to bring. All it takes is someone getting into your Authy account to gain access to all of your keys... not a good idea at all.

As for the SMS fees, we can’t really tell for sure (and please, let’s not make assumptions here) as to whether those will be free or not. Obviously sending normal sms messages would cost money... but these are the 2FA codes being sent around, and I’m sure there’s a service dedicated for that which won’t charge for a small forum.