On September 3, T-Mobile is offering 30 minutes of WiFi for smartphones on all Gogo-equipped domestic flights for free. You do not have to be a T-Mobile customer to take advantage of this offer — it’s open to all passengers with a smartphone, regardless of carrier. However, T-Mobile ONE and T-Mobile Plus customers will enjoy additional benefits, such as longer Web surfing time and free messaging. On Labor Day, T-Mobile is Giving EVERYONE Free Gogo Wi-Fi. Yes…YOU Get Free Gogo Wi-Fi and YOU Get Free Gogo Wi-Fi – Customer or Not This Labor Day, the Un-carrier is giving everyone – yep, even Verizon & AT&T customers – 30 minutes of free Wi-Fi for smartphones on all Gogo-equipped domestic flights.