We have confirmed that OnePlus smartphones (5, 5T, 6 and 6T) have a Bluetooth compatibility issue which prevents them from connecting to certain Tile models: Tile Pro (2018), Tile Sport and Tile Style (2017). Kindly note that Tile Mate (2018 and 2016) and Tile Slim are unaffected by this issue.
We have directly linked this issue to the OnePlus smartphones; the affected Tiles will work just fine with non-OnePlus smartphones. The good news is that OnePlus can make a fix with a software update to the phones.
We need your help to escalate this issue with OnePlus. You can do this by sharing your experience directly with OnePlus.
Thank you for your patience and support. We really appreciate your help in escalating this issue.