Was working initially when out for a drive but I tried to increase the volume and somehow, it's gone completely silent. Next to the speaker icon on the google maps interface it says 'iPhone volume low' with the speaker icon striked out. I've tried clicking on it to somehow increase it but doesn't work. I've also checked the phone volume (which is fine - sound works on all other apps). I've tried putting it on/off silent, have tried restarting the app, restarting the phone and even uninstalling and re-installing the google maps app. I tried going into the app settings etc. but could not see anything obvious that could have muted it suddenly.
None of this has helped :( couldn't find help online either.
Any help much appreciated