There are times when the power/volume/home button of smartphones which makes it hard or almost impossible to use the mobile phone. There are two possible reasons your smartphone has a stuck, missing, broken or maybe physical frame issue.
Physical button part issue could happen because of the damage to the device button. Or it could happen because the device is bent or dented on its frame. Fone Galaxy experienced technicians can solve the problem by replacing the button or the frame of mobile phone with best quality parts.