1. Open the Google Play Store
2. Search there for "foxfi dpanet"
3. Select 'FoxFi (Sprint / AT&T only)'
4. Install the App.
5. You now need to install the PdaNet prigram on your Computer.
Method 1:
1. go to google.com
2. Search for 'Pdanet foxfi'
3. Click on 'pdanet.co'
4. Click 'Download' ( For Windows or Mac. ).