To buy or sell digital currency using Circle Invest, you first need to successfully deposit funds from your bank account. Once you have USD deposited in your Invest account:

1. Navigate to the Markets screen by selecting the bottom left tab
2. Select the type of digital currency you'd like to buy or sell. For example, let’s see you chose to buy Bitcoin
3. Click on the Buy BTC or Sell BTC button in that digital currency screen
4. Enter the amount you'd like to buy or sell, either denominated in that digital currency (BTC) or in USD. You can tap on the amount label to toggle between the two denominations.
5. Tap Buy Bitcoin on the button below. This will take you to a confirmation screen before submitting your order.
6. Click Confirm Purchase.
7. A confirmation screen will follow with the amount of digital currency you bought in exchange for fiat.

Your portfolio and digital currency amounts will now reflect the buying or selling transaction that took place.