To place a trade on the MT4 iPhone app, navigate to the ‘Quotes’ tab, tap on the instrument you want to trade and press ‘Trade’.
You will then be prompted to specify the volume and type of execution you would like. At this point you can also add a Stop Loss or Take Profit, if you want to apply one, before you confirm the Buy or Sell order.
Where can I download the MetaTrader 4 iPhone app?
How do I log in to my account using the MT4 iPhone app?
How do I modify a trade on the iPhone app for MT4?