T-Mobile still offers a promotion that includes Netflix for its customers, known as the “Netflix on Us” offer. However, it’s possible that this offer has changed or been discontinued since then. Here’s what I know about the T-Mobile and Netflix partnership:

In 2017, T-Mobile announced that it was partnering with Netflix to offer a promotion called “Netflix on Us” for eligible T-Mobile One family plans. This promotion gave customers with at least two lines of T-Mobile One service access to a Netflix Standard plan (which includes HD streaming) at no additional cost. Customers could choose to upgrade to a premium plan (which includes Ultra HD streaming and up to four simultaneous streams) by paying the difference in price.
The promotion was well-received by T-Mobile customers and helped the company differentiate itself from competitors in the crowded wireless market. In 2018, T-Mobile expanded the promotion to include customers on its T-Mobile ONE Military and T-Mobile ONE 55+ plans. The company also announced that it was extending the promotion indefinitely for existing customers and would continue to offer it to new customers who signed up for eligible plans.
However, it’s worth noting that the “Netflix on Us” promotion has undergone some changes over the years. In 2019, T-Mobile announced that it would be phasing out the promotion for new customers and replacing it with a similar offer that included access to a different streaming service, Quibi. However, Quibi shut down later that year, and T-Mobile announced that it was restoring the “Netflix on Us” offer for new customers.
It’s also worth noting that the “Netflix on Us” promotion has some restrictions and limitations. For example, customers must have at least two lines of eligible T-Mobile service, and the promotion only applies to the standard plan, not the premium or basic plans. Additionally, customers who cancel their T-Mobile service or switch to an ineligible plan will lose their access to Netflix.
In conclusion, as of my knowledge cutoff in September 2021, T-Mobile still offers the “Netflix on Us” promotion for eligible customers. However, it’s possible that this offer has changed or been discontinued since then, so it’s always a good idea to check with T-Mobile directly to confirm current promotions and offers.