Exede Buy More Data Direct
You should receive a reply text asking you to confirm the purchase (usually by replying "YES").
If you know exactly how much you need (e.g., 1GB or 5GB), you can try: exede buy more data
If the text isn’t going through, the most reliable way to add data is via the Viasat (Exede) My Account portal or by using the Viasat Mobile App. You should receive a reply text asking you