The new software will appear on two new Lumia smartphones in November. After that, it starts to land on older Lumias.
But the nation's largest wireless did post a profit for the second quarter and phone subscriber growth that topped expectations.
The online video services hopes the iconic sitcom will bring in more subscribers, especially among the younger crowd.
The free service allows anyone to track down shows and movies available from video-streaming services and broadcast TV, while subscribers can do much more.
The television-streaming site's members are up 50 percent since last year, CEO Mike Hopkins said, with each subscriber watching more video on average.
Tidal's new owner Jay Z has been calling customers personally to thank them for subscribing, while CEO Andy Chen has left the company.
Les Moonves says CBS All Access, the broadcaster's standalone streaming service, tops the 100,000 people who have signed up for Dish Network's Sling TV so far.
While the series has been available for digital purchase since 2011, members of the book-streaming service now can get their Potter fill at no additional charge.
A fourth-quarter jump in the customer turnover rate underscores the increasingly volatile environment for wireless carriers that even Verizon can no longer avoid.
Though it still lags in overall number of subscribers, the carrier beat rivals last quarter in terms of gaining new customers and keeping old ones, according to a research firm.