Xperia M4 aqua camera button not working

[IvanSaraiva]

Hi, I have a m4 aqua brand new, but the camera button isn't working at all. any idea how to solve this? any configuration needed?

Thank you.

[Qatrium]

Go to Settings -> About phone -> Diagnostics -> Test -> Camera button and check if it will pass the test.

[Rijeshp]

Tested,but the test is failed
Please let me a solution for these issue.my email is is 

[Hampus]

Hi,

And if you boot into safe mode, does the test still fail? If yes, I suggest that you perform a software repair via PC Companion.

In PC Companion you press start on Support Zone > Start on Update the phone/tablet software > Repair phone/tablet (the blue clickable link in the message) > Follow these steps without having your device connected to the PC.

Follow the instruction that appears in the program and do not connect your device until this guide tells you how to connect it.