CUPERTINO, Calif.  — Apple unveiled new iPhones that are largely unchanged from previous models and accompanied by an unexpected price cut for the cheapest model, underscoring the company’s efforts to counteract a sales slump of its flagship product.

The company’s new models are so similar to last year’s lineup they may be upstaged by Apple TV Plus, the company’s upcoming video service, which is rolling out on Nov. 1 at $5 per month.

Apple, in fact, is already using the video service to promote iPhones, offering a free year of Apple TV Plus with new device purchases.

IPhone shipments are down 25 percent so far this year, according to the research firm IDC, putting more pressure on Apple to generate revenue from services such as music and video streaming, games and its App Store. Revenue from services rose 14 percent to nearly $23 billion during the first half of this year.

It is cutting the price of the iPhone 11 to $700 from $750, the price of last year’s XR. The lower prices reverses a trend in which premium phones get more expensive as people upgrade them less often.

Apple CEO Tim Cook didn’t have much new to say about the TV Plus service beyond its pricing and service date, although he did show a trailer for a new Jason Momoa-led series called “See.”

Like Netflix and similar services from Amazon and Hulu, Apple has been lavishing billions of dollars for original programs featuring stars such as Oprah Winfrey, Jennifer Aniston and Reese Witherspoon. The service will launch with nine original shows and films, with more expected each month. It will only carry Apple’s original programming, and will be available in 100 countries at launch.

Apple also announced a new videogame subscription service will cost $5 a month when it rolls out on Sept. 19. Called Apple Arcade, the service will allow subscribers to play more than 100 games selected by Apple and exclusive to the service.

The company’s new phone models resemble last year’s iPhone XR, XS and XS Max. And they have the same design — with more display space, less bezel and no home button — that Apple switched to with the iPhone X in 2017.

New iPhone cameras are intended to appeal to the growing number of people who use phones to take pictures of themselves, friends, family and the places they go. The phone’s “portrait mode” now also works with pets, not just humans.