This will not work with the accessory cable on Oneplus 6T or 7TI. I'm downgrading my original rating from one star to four. I couldn't get this to work with my phones with the extra cable, but I later tried a regular pair of headphones and got them to work with headphones so they didn't deserve a star. I like to be honest in my reviews and correct when warranted, like here. If you use headphones with your phone it's fine, if you try to connect it to your car with an extra cable I couldn't get it to work. I bought another brand and it works with an extra cable. Hope that helps.
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