I've been using the N10 for about six months now with no issues. I've never gotten a 5G signal on Visible with it though. I did when I tried it with Mint and T-Mobile towers.
Hey there! I am really glad to hear that you are enjoying the Visible service so far. The reason why you could not get 5G signal on your OnePlus Nord N10 5G phone so far is because only a limited number of devices support the 5G service on the Visible network. You can find the full list and more details right here: https://www.visible.com/help/5G. If you have any questions that are not answered there, our Care team is ready to help. Please reach out by chatting on our site, tweeting @visiblecare or sending a DM to @Visible on Facebook. -LS