> For the complete documentation index, see [llms.txt](https://docs.cwallet.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cwallet.com/crypto-deposit-and-withdraw/custodial-wallet/how-to-use-contacts.md).
# How to Use Contacts
1. Visit Cwallet and navigate to the button, then click Contacts
2. Click this button to add your address book
If you do not know how to use Address Book, you can kindly check it here:
{% content-ref url="/pages/v8yMamtKAIXVBzXa6Loo" %}
[How to Use Address Book](/crypto-deposit-and-withdraw/custodial-wallet/how-to-use-address-book.md)
{% endcontent-ref %}
3. Click the button to scan your wallet address QR code or Cwallet account QR code. If you scan an address, then it will be added to your Address Book, and if you scan a Cwallet account, then it will be added to your contacts.
4. Click this button to add the cwallet user to your contacts list by searching their email, phone number, or Cwallet ID.