pthanvi , via OnePlus 9R , Oct 25, 2021 : My mobile was opened by other person with his finger print even it was not registered. It was tried multiple times to open mobile as well as all other application and every time mobile allowed other person to open my mobile application. Same time other person also tried to open with his finger print but it didn't open but specific by one person my mobile was opening with his finger print. I got relief from this issue only after I reboot my mobile and that person access was stopped. OnePlus can term it as a BUG but I will definitely say it's a Security Threat as anytime anywhere my mobile data can be compromised. Kindly look in to this matter and treat it as a Big Threat to OnePlus users.