Regarding how to choose a wallet client, the first choice is the official wallet. Officially recommended non-open source wallets will not work, followed by third-party wallets with open source code. They must be able to back up wallet files instead of mnemonic words, including open source code for computers and mobile phones. Because the wallet client code is open source, there will be no hidden secrets. The mnemonic phrase generated on some closed-source clients may be just an ID number. The passwords for the wallet private key and encrypted private key are in official hands. When did they run away? You can't get it back. You may not even know the real address of your coins on the blockchain. The coins can only be seen in the APP. In this case, it is sure that the wallet is not yours. Wait for them to run away, and then say that hackers have attacked the wallet. Stolen, force majeure, refusal to claim, wallet running away is not the only time. There are many tricks for those who don’t run away, such as using your coins to speculate in coins, etc. The BTC official website has a wallet client recommendation page, which is very detailed. , the security level of each third-party wallet is clearly written. It says that for some wallet clients, you completely own the coins, some are jointly owned, and some are completely owned by you but not owned by you. If you take a look at these, you will understand that the same is true for wallets of other currencies. , especially if there are many currencies in a wallet but only one mnemonic phrase is that they own the wallet, you have the wallet encryption password, or you only have the wallet ID, but the ID is a mnemonic phrase.