My phone automatically answers in speaker phone when I accept a call. There is no way to turn it off in the settings menu.
Hi Lion. Did you recently install apps? If you did, try to uninstall them and observe if this still happens. Also, check both audio port and charging port, make sure they are clean. I want you to check both audio and charging port because I read from anothe user that dusts settled inside those ports which caused the phone think that the phone is docked.