Just bought a Oneplus 8 pro 5G IN2023 on ebay, and was watching some review videos after, then found this in one of the video: the dual sim function is not available at the moment, it will come with an OTA update. Looked it up and found out it's mainly north america models, which is american and canadian variants. Do the unlocked version sold on ebay have the same problem or they work just fine? I'm looking to use dual sim for 4G at the moment then switch one of the number to 5G when it's available. Does anyone here own this phone and can share some experience? Thanks a bunch.