Terrible. I have a Galaxy S21 Ultra and a yearly subscription to ESPN+ and have had it for years now. It use to work just fine, however I'm not sure if there was an update or something but 3 or 4 weeks ago the video playback has began buffering continuously. I can't watch more than 4 seconds of live or on-demand videos w/o the stream buffering for 5 seconds. It's just unbearable, which really sucks because I paid a year in advance and the service is virtually unusable for me on wifi and data.