When backing up your mnemonic phrase, we strongly suggest using Bodily media, such as composing to the mnemonic phrase card or simply a metallic board such as the SafePal Cypher. You can even continue to keep multiple back-ups of it. - Lưu trữ Seed Phrase trên thiết bị điện tử: https://socialmarkz.com/story9257721/not-known-factual-statements-about-bip39-explained