Inside K5 Wallet, one can add Contacts to the Address Book to facilitate transfers to the wallets that are frequently used and avoid typing errors.
You can add a wallet address to Contacts as follows:
Step 1: Tap on the Menu from the Bottom-left corner of the Portfolio screen. Then, tap on the Address book under Wallet section.
Step 2: Select the blockchain, and tap on CONTACTS.
Step 3: Tap on Add Contact button.
Step 4 : Enter the wallet address and contact name, then tap on CONFIRM button. Finally, enter the PIN code to confirm.