Quibi, a short-form, mobile-only streaming service launching Monday, is free to T-Mobile subscribers.

If you've been too busy to keep up with this latest contender in the streaming wars, Quibi is a truly unique player in terms of how it works on your phone. Programs are filmed for viewing in both landscape and portrait video modes (landscape and portrait), and you can go back and forth between the two modes simply by rotating your phone. This means that you can watch short programs closely with one hand or on the go.

T-Mobile customers can sign up for the promotion on mytmobile.com or the T-Mobile app on iOS or Android between Quibi's April 6 launch date and July 7.

The only catch is that not all T-Mobile customers will get this deal. The seventh paragraph of the press release announcing this campaign shows that it is limited:

Don't have T-Mobile? Well, the good news is that Quibi is launching the longest free trial I've ever heard of, giving potential subscribers 90 days to kick the proverbial tires.

That long-term offer may be due to this ever-changing world we live in, where people may be less mobile than ever. But on the whole, I use my cell phone just as often, if not more often, than I used to.

Quibi also features a mix of daily news content and content that appears broad enough to appeal to all demographics.

The aforementioned rotating screen trick, Turnstyle, is really clever. Each version's camera angle (vertical like an Instagram Story post, horizontal like a traditional movie) is designed to make optimal use of its screen space: the iPhone's notch design, the punch holes in Samsung's Galaxy devices, and various other sizes of smartphone screens. It will be interesting to see how Quibi handles them.

Quibi's shorter-than-usual programming will be free for the first year, along with T-Mobile's Netflix on Us gift. After that year, subscribers will have a choice between the two.

When I said short, I meant it; Quibi episodes are 10 minutes or less, so you can watch three of them while waiting for your pizza to be delivered. These shows feature big names like Chrissy Teigen on the funny show Chrissy's Court, which is like Judge Judy, and Liam Hemsworth and Christoph Waltz on Most Dangerous Game.

Quibi will also feature reboots of once-beloved shows, including the return of Punk'd, with Chance the Rapper replacing Ashton Kutcher as the prankster. The dating show Singled Out will also return.

On the big-name actor front, Sophie Turner of "Game of Thrones" is starring in a survival series, "Survive. Former SNL cast member Will Forte also stars in Flipped, a comedy about a home renovation gone wrong, which also stars Andy Garcia and Eva Longoria.