The download does not work if you do not have some signal. In 15 seasons of criminal minds I've had to reinstall the app and at least 2 times per season to get the errors that pop up to go away and actually play. The error that shows up says I have a weak connection even if I have full bars on my 4g and wifi. All in all I dislike the app but it's the only place I can watch several shows I like so I keep putting up with the horrible.