The mobile version of the MetaTrader 4 trading platform is called MetaTrader 4 Mobile.
With MT4 you can trade while you are on the go, from anywhere and at any time.
MetaTrader 4 for Android devices can be downloaded without any charges from the Google Play store (a.k.a. Android Market). You are now in the position to enter your account and trade from any Android smartphone or tablet.
Download MetaTrader 4 to your iPhone/iPad from the Apple Store free of charge.