Motion detection notices but no sound alert happens

In my Device Settings/Alert Settings/App Alert Tones/Motion, I have a Sound selected and the Volume is up. When on the screen, if I change the Volume, the tone samples for that volume level.But in real life, when a motion happens, I only get the Drop Down message alert on the iPhone, but no sound alert. The Ring is recognizing motion, and providing an alert, just not an audible one.I've tried restarting the phone, logging out, then logging back in, yet no change.ideas?