Two quick thoughts which may prove useful if you see these issues-
On my iMac, Wi-Fi does not start at all when I wake it. It no longer connects to my router and I have to manually select it to get things going.
On my iPhone SE, plugging in a lightning to traditional headphone port adapter works for about 3 minutes and then the sound is lost. The only way to solve it is to reboot the iPhone.
Hopefully these will be fixed soon.