A wallet is a tool for spending authority
A wallet manages keys, addresses, and transaction construction. It can show a balance by checking which outputs are spendable. The app itself is not a container of coins, and a displayed balance does not always mean you control the keys.
Before choosing a setup, identify who can authorize a payment and what information restores that ability.
Custodial accounts and self-custody
With a custodial account, a provider controls the keys and maintains your account balance. You depend on its withdrawal policies, security, and availability. With self-custody, you control the spending keys and take responsibility for backups and safe signing.
There is no universal recovery method. A provider may offer account recovery; a self-custody wallet typically cannot replace lost recovery material for you.
An address is not a private key
A receiving address can be shared with a sender. A private key must remain secret. Many wallets use a recovery phrase to reconstruct a family of keys and addresses. That phrase is sensitive because someone who obtains it may be able to recreate spending authority.
Different wallet formats and extra passphrases can affect recovery. Follow the documentation for the specific wallet, not instructions for an unrelated product.
Online software and separate signing devices
An online software wallet is convenient, but its keys may be exposed if the device is compromised. A hardware signing device can keep private keys separate from the connected computer. It still depends on safe setup, recovery backups, and checking the transaction on its own display.
A hardware device does not make a malicious transaction safe merely because it can sign it.
Try the idea: losing your phone
Consider two situations. In the first, a provider holds the keys and you lose the phone containing its app. Access depends on that provider’s recovery process. In the second, you hold the keys and lose the only copy of the recovery material as well as the phone.
Ask who can help in each situation. A remembered app password is not automatically a backup of a self-custody wallet.
A common misconception: a password is a backup
An app password may unlock access to a local wallet file. It is not automatically the recovery material needed after the device disappears. A recovery phrase, wallet-file backup, and additional passphrase are different items; the required combination depends on the wallet.
Before you move on, identify where the keys are held, what the documented backup includes, and whether a provider controls recovery. Use documentation and an empty practice wallet rather than recording real recovery words in this lesson.