Hi there!
If you have an Android tablet, all you need is to connect to the Southwest Wi-Fi hotspot on your device and open up your internet browser. Your browser will direct you to the Southwest inflight website, which will provide you with variety of entertainment options such as free live and on-demand television (although this option may not be available on international flights due to licensing restrictions).
There's also internet access (for $8 a day per device) and movies (for $5 per movie per device) if you wish to purchase any of those options.
Happy flying!
