https://www.theverge.com/2019/1/7/18172109/sprint-samsung-5g-massive-mimo

Sprint will carry one of Samsung’s upcoming 5G-enabled smartphones later this year, joining rivals AT&T and Verizon. The company says the smartphone will be available in summer 2019, and it will also be compatible with Sprint’s existing LTE network.

In December, both AT&T and Verizon announced that they would be carrying upcoming 5G smartphones. Verizon was first, and it announced that it would be selling one of the phones in the first half of 2019. AT&T responded by saying that not only would it have that same phone early in the year, but it would also offer a second 5G phone from Samsung in the second half of the year.