حابب اسئل ليش ما يظهر اسم شركة الجوال في الاعلى على يسار الشاشة

how i can know if my phone1 note 9 its hacked or not there is any possible way to check because someone was invite me in hangout app but i figure that during conversation the phone accept a video call without any ringing ok acceptance from me so dire...