You can restore all bitcoin address you have only with 12 word mnemonic, so it's not necessary to backup all the private keys. You better make sure to backup/remember those 12 words instead.
But, backup the private keys if you still feel anxious
But, backup the private keys if you still feel anxious
Hello, can you give an example of a situation when BTC owner MUST have private keys? In other words, a situation when 12-word recovery phrase won't be sufficient?