This is the OnePlus 7T HD1907 Single Sim FACTORY UNLOCKED model. There is no carrier branding, no carrier applications and all future updates will be from OnePlus directly. This phone is Dual Sim capable - only single sim tray included.
Does OnePlus 7T work on CDMA?
OnePlus 7T With a responsive 90 Hz refresh rate and the latest HDR10+ technology, the OnePlus 7T's Fluid Display is smooth, vivid, and incredibly immersive. If it sounds too good to be true, just wait until you see it. For USA Buyers : This Smartphone is compatible/will work with CERTAIN GSM and/or CDMA Networks ONLY.
How do I activate my iPhone 7 with Metro PCS?
https://www.youtube.com/watch?v=P4k99qD4BZA
How do you activate a metro phone by yourself?
Be sure you're connected to Wi-Fi on your phone and head to Metro by T-Mobile's Self-Service Center. If you do not have Wi-Fi access, you can call Customer CARE at 1-888-8metro8 to activate. You may also activate using a computer with an internet connection—be sure to have your device nearby.