Notification bar activates while on a call

When I come off a call, the notification bar is down and also the secondary bar as well sometimes, the one where you can interact with wifi and bluetooth settings.
I’m new to Android, coming from an iPhone 4, so, I’m not sure if it’s a problem with the proximity sensor, or if it’s just a setting in Android.
Does anyone have any advice on this please?

A post was merged into an existing topic: FP2 proximity sensor not reliably turning off screen during calls - See first Post for Workarounds