A limit order is a way to buy or sell digital currency that locks in a certain price. Here is how to execute a limit order on the mobile app.
1) Click "buy" or "sell" beside the coin you wish to execute a limit order.
2) Make sure the "limit" tab is selected
3) Enter the amount of digital currency you are looking to buy or sell and the price in which the limit order should execute. Make sure to take a look at the order book so that you can see what prices and quantities are available.
4) To cancel the order, or check in on the status, go to "history".