Iphone strange buzzing (camera area)
Hi i have a IPhone 6s,last night i hear a buzzing noise on my back phone almost on the back camera area,I have to stick the phone on ear to hear that noise when i use touch screen the noise can be heard better , even when i increase or decreas display brighteness theres a sound like somethings buzzin Im really really concerned can anyone tell me if its all ok cause i dont have a (Apple Store) near where i live or if u have the same problem please tell me. Thank you guys
iPhone 6s iOS 9.3