To be able to download the Android version of MetaTrader, you will need to follow the below steps.
Finding MetaTrader for Android.
Direct link: Click here.
At the top of the page, tap the 3 dots.
Choose Trading Platforms.
Scroll down and choose Android.
Downloading MetaTrader.
On the Google Play Store Application search for MetaTrader 4.
Tap Install, then launch the app when done.

MetaTrader 4 application.
Tap the 3 horizontal lines on the left.
Tap Getting Started or Manage Accounts.

Finding our servers.
Tap the + symbol.
Tap Login to an Existing Account.
Finding our servers.
Type Clover and select the Clover4X-Live if you wish to access your Live Account.
Enter your login details and tap Sign in.
Once you are logged in, if you have not already, you would need to:
Deposit funds into your account: Click here for the step-by-step guide.
Do an Internal Transfer: Click here for the step-by-step guide.