https://www.theverge.com/circuitbreaker/2018/5/22/17379550/oneplus-6-carriers-price-now-available

‘The OnePlus 6 is now officially available to order from OnePlus’ website. You can pick up the base model starting at $529, which gets you 6GB RAM and 64GB of storage. As a reminder: if you get a OnePlus 6, it won’t work on Sprint or Verizon in the US; it’s only on AT&T and T-Mobile.