With your Luno wallet, you already have the ability to send and receive Bitcoin. You can add an Ethereum wallet by following the instructions below.
Learn more about Luno’s supported digital currencies:
Go to MENU → WALLETS → ADD NEW WALLET ( + ) → ENABLE ETH WALLET
You will now see an Ethereum wallet added to your WALLETS screen.
Once your Ethereum wallet is added, you will be able to:
Buy or sell Ethereum
Note that Ethereum is not currently supported on the Luno Exchange. That means you can buy and sell ETH with the Luno wallet, but not trade it using the Luno Exchange yet.