Why does my Samsung Galaxy S6 have camera focus struggle and a buzzing/hissing noise?

[AC Question]

Hello! I've had my Samsung Galaxy S6 since launch and everything has been fine up until the past few days or so when everytime I open up either the camera or snapchat, the phone makes a weird buzzing sound. i want to take it back to the shop but the back screen is broken so i dont know what to do

 

[belodion]

It sounds like the camera needs replacing or repairing.