[Q] Disable auto speakerphone? topic

Apparently (I use that word because I don't think I have ever seen this feature officially listed) the S5 automatically switches to speakerphone when you take the phone away from your ear. I guess this is supposed to be a convenience, but for me it just doesn't work well, activating speakerphone too often when the phone IS up to my ear.

Is there any way - a setting I haven't found, an app I can freeze, xposed module, whatever - to disable this functionality altogether?