Instructions are similar for Mac, Android phone and iPhone. Only difference is download source.
Go to App Store and type Blue Wallet and select 'Download'
Open Blue Wallet
Select 'Add Now' in the 'Add Wallet' box in the left hand menu.
Enter a wallet name and select 'Bitcoin'
Write down the 12 words on a piece of paper and press next once complete.
Anyone with access to these words can take control of your funds!
Do not save these words on your computer
Do not take a picture or print them
Make sure to write them correctly and in the right order.
Store this piece of paper in a safe place.
Select your wallet in the left-hand menu and select receive.
Click on the Bitcoin address in order to copy it to your clipboard.