Unintentional Vibrate Mode

[anon(623362)]

My LG Vortex cell phone overrides my selection of vibrate mode and notification ringing volume (becomes the permanent settings) when pressing the side volume button. I was told by LG customer service ALL Android phones do this due to the Android operating system. First of all it true? Is there a way to force any Android smart phone to keep the receiving call volume at its intended volume and keep the "NEVER" vibrate selection from switching even when pressing the volume button? In order to use these cell phones for receiving emergency calls it should be able to force a phone to keep its intended settings and not allow them to be accidently change settings by pressing an external button.