On September 3, 2018, T-Mobile is offering everyone 30-min of in-flight Gogo Wifi on all Gogo-equipped domestic flights for FREE for a limited time. T-Mobile ONE customers will also enjoy free messaging, visual voicemail and texting all flight long, plus a free hour of smartphone Wi-Fi on all Gogo-equipped domestic flights. And customers with T-Mobile ONE Plus get free Wi-Fi for the entire flight when they fly.