Getting very intermittent alerts regarding notifications. Just a few minutes ago, I received a text message and a notification from the Amazon app at the same time. iPhone 7+ screen lit up, but no sound was played to alert to the text message or notification. Now technically, since I have a connected apple watch, it shouldn't, but the apple watch did not notify me either, but when I tapped on the watch to show the screen, it lit up and instantly showed the notification, but never received the vibrating alert/sound on the watch. If I hadn't been looking at the phone, I never would have known I had a message and an app notification.
Yet, about two hours ago, I did a hard reboot, and when it booted back up, I received to text messages from this past monday (which I had already seen and received) on the phone, with full sound & vibrate (but nothing on my watch).